Home / 28,397.07-39,188.23-15,650.71

Finding the Fourth Proportional to 28,397.07, 39,188.23 and 15,650.71

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Solution

The fourth proportional to 28,397.07, 39,188.23 and 15,650.71 is: 21,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.07 : 39,188.23 = 15,650.71 : x
  2. Step 2: Convert to fraction form
    28,397.07/39,188.23 = 15,650.71/x
  3. Step 3: Cross multiply
    28,397.07x = 39,188.23 × 15,650.71
  4. Step 4: Simplify right side
    28,397.07x = 613,323,681.99
  5. Step 5: Solve for x
    x = 613,323,681.99/28,397.07
  6. Step 6: Final answer
    x = 21,598.13

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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.