Home / 12,771,008.10-19,156,512.15-9,915,660.90

Finding the Fourth Proportional to 12,771,008.10, 19,156,512.15 and 9,915,660.90

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Solution

The fourth proportional to 12,771,008.10, 19,156,512.15 and 9,915,660.90 is: 14,873,491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,008.10 : 19,156,512.15 = 9,915,660.90 : x
  2. Step 2: Convert to fraction form
    12,771,008.10/19,156,512.15 = 9,915,660.90/x
  3. Step 3: Cross multiply
    12,771,008.10x = 19,156,512.15 × 9,915,660.90
  4. Step 4: Simplify right side
    12,771,008.10x = 189,949,478,506,129.94
  5. Step 5: Solve for x
    x = 189,949,478,506,129.94/12,771,008.10
  6. Step 6: Final answer
    x = 14,873,491.35

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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.