Home / 15,700,516.21-21,663,536.11-9,172,884.97

Finding the Fourth Proportional to 15,700,516.21, 21,663,536.11 and 9,172,884.97

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Solution

The fourth proportional to 15,700,516.21, 21,663,536.11 and 9,172,884.97 is: 12,656,725.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700,516.21 : 21,663,536.11 = 9,172,884.97 : x
  2. Step 2: Convert to fraction form
    15,700,516.21/21,663,536.11 = 9,172,884.97/x
  3. Step 3: Cross multiply
    15,700,516.21x = 21,663,536.11 × 9,172,884.97
  4. Step 4: Simplify right side
    15,700,516.21x = 198,717,124,780,471.28
  5. Step 5: Solve for x
    x = 198,717,124,780,471.28/15,700,516.21
  6. Step 6: Final answer
    x = 12,656,725.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.