Home / 20,558.07-28,368.17-16,319.39

Finding the Fourth Proportional to 20,558.07, 28,368.17 and 16,319.39

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Solution

The fourth proportional to 20,558.07, 28,368.17 and 16,319.39 is: 22,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.07 : 28,368.17 = 16,319.39 : x
  2. Step 2: Convert to fraction form
    20,558.07/28,368.17 = 16,319.39/x
  3. Step 3: Cross multiply
    20,558.07x = 28,368.17 × 16,319.39
  4. Step 4: Simplify right side
    20,558.07x = 462,951,006.38
  5. Step 5: Solve for x
    x = 462,951,006.38/20,558.07
  6. Step 6: Final answer
    x = 22,519.19

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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.