Home / 28,499.52-39,343.17-20,019.66

Finding the Fourth Proportional to 28,499.52, 39,343.17 and 20,019.66

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Solution

The fourth proportional to 28,499.52, 39,343.17 and 20,019.66 is: 27,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.52 : 39,343.17 = 20,019.66 : x
  2. Step 2: Convert to fraction form
    28,499.52/39,343.17 = 20,019.66/x
  3. Step 3: Cross multiply
    28,499.52x = 39,343.17 × 20,019.66
  4. Step 4: Simplify right side
    28,499.52x = 787,636,886.72
  5. Step 5: Solve for x
    x = 787,636,886.72/28,499.52
  6. Step 6: Final answer
    x = 27,636.85

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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.