Home / 28,397.57-39,188.10-15,651.92

Finding the Fourth Proportional to 28,397.57, 39,188.10 and 15,651.92

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Solution

The fourth proportional to 28,397.57, 39,188.10 and 15,651.92 is: 21,599.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.57 : 39,188.10 = 15,651.92 : x
  2. Step 2: Convert to fraction form
    28,397.57/39,188.10 = 15,651.92/x
  3. Step 3: Cross multiply
    28,397.57x = 39,188.10 × 15,651.92
  4. Step 4: Simplify right side
    28,397.57x = 613,369,162.82
  5. Step 5: Solve for x
    x = 613,369,162.82/28,397.57
  6. Step 6: Final answer
    x = 21,599.36

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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.