Home / 18,190,315.20-27,285,472.80-10,915,478.40

Finding the Fourth Proportional to 18,190,315.20, 27,285,472.80 and 10,915,478.40

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Solution

The fourth proportional to 18,190,315.20, 27,285,472.80 and 10,915,478.40 is: 16,373,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190,315.20 : 27,285,472.80 = 10,915,478.40 : x
  2. Step 2: Convert to fraction form
    18,190,315.20/27,285,472.80 = 10,915,478.40/x
  3. Step 3: Cross multiply
    18,190,315.20x = 27,285,472.80 × 10,915,478.40
  4. Step 4: Simplify right side
    18,190,315.20x = 297,833,988,982,187.56
  5. Step 5: Solve for x
    x = 297,833,988,982,187.56/18,190,315.20
  6. Step 6: Final answer
    x = 16,373,217.60

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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.