Home / 20,220,385.60-30,330,578.40-15,685,422.40

Finding the Fourth Proportional to 20,220,385.60, 30,330,578.40 and 15,685,422.40

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Solution

The fourth proportional to 20,220,385.60, 30,330,578.40 and 15,685,422.40 is: 23,528,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220,385.60 : 30,330,578.40 = 15,685,422.40 : x
  2. Step 2: Convert to fraction form
    20,220,385.60/30,330,578.40 = 15,685,422.40/x
  3. Step 3: Cross multiply
    20,220,385.60x = 30,330,578.40 × 15,685,422.40
  4. Step 4: Simplify right side
    20,220,385.60x = 475,747,933,840,316.12
  5. Step 5: Solve for x
    x = 475,747,933,840,316.12/20,220,385.60
  6. Step 6: Final answer
    x = 23,528,133.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.