Home / 20,081,376.80-30,122,065.20-18,695,693.60

Finding the Fourth Proportional to 20,081,376.80, 30,122,065.20 and 18,695,693.60

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Solution

The fourth proportional to 20,081,376.80, 30,122,065.20 and 18,695,693.60 is: 28,043,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081,376.80 : 30,122,065.20 = 18,695,693.60 : x
  2. Step 2: Convert to fraction form
    20,081,376.80/30,122,065.20 = 18,695,693.60/x
  3. Step 3: Cross multiply
    20,081,376.80x = 30,122,065.20 × 18,695,693.60
  4. Step 4: Simplify right side
    20,081,376.80x = 563,152,901,578,422.75
  5. Step 5: Solve for x
    x = 563,152,901,578,422.75/20,081,376.80
  6. Step 6: Final answer
    x = 28,043,540.40

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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.