Home / 10,919,132.10-16,378,698.15-8,399,708.10

Finding the Fourth Proportional to 10,919,132.10, 16,378,698.15 and 8,399,708.10

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Solution

The fourth proportional to 10,919,132.10, 16,378,698.15 and 8,399,708.10 is: 12,599,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919,132.10 : 16,378,698.15 = 8,399,708.10 : x
  2. Step 2: Convert to fraction form
    10,919,132.10/16,378,698.15 = 8,399,708.10/x
  3. Step 3: Cross multiply
    10,919,132.10x = 16,378,698.15 × 8,399,708.10
  4. Step 4: Simplify right side
    10,919,132.10x = 137,576,283,518,010.02
  5. Step 5: Solve for x
    x = 137,576,283,518,010.02/10,919,132.10
  6. Step 6: Final answer
    x = 12,599,562.15

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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.