Home / 28,711.92-43,070.28-10,938

Finding the Fourth Proportional to 28,711.92, 43,070.28 and 10,938

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Solution

The fourth proportional to 28,711.92, 43,070.28 and 10,938 is: 16,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.92 : 43,070.28 = 10,938 : x
  2. Step 2: Convert to fraction form
    28,711.92/43,070.28 = 10,938/x
  3. Step 3: Cross multiply
    28,711.92x = 43,070.28 × 10,938
  4. Step 4: Simplify right side
    28,711.92x = 471,102,722.64
  5. Step 5: Solve for x
    x = 471,102,722.64/28,711.92
  6. Step 6: Final answer
    x = 16,407.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.