Home / 28,434.29-42,649.89-8,712.90

Finding the Fourth Proportional to 28,434.29, 42,649.89 and 8,712.90

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Solution

The fourth proportional to 28,434.29, 42,649.89 and 8,712.90 is: 13,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.29 : 42,649.89 = 8,712.90 : x
  2. Step 2: Convert to fraction form
    28,434.29/42,649.89 = 8,712.90/x
  3. Step 3: Cross multiply
    28,434.29x = 42,649.89 × 8,712.90
  4. Step 4: Simplify right side
    28,434.29x = 371,604,354.99
  5. Step 5: Solve for x
    x = 371,604,354.99/28,434.29
  6. Step 6: Final answer
    x = 13,068.88

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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.