Home / 28,635.70-42,943.26-9,910.66

Finding the Fourth Proportional to 28,635.70, 42,943.26 and 9,910.66

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Solution

The fourth proportional to 28,635.70, 42,943.26 and 9,910.66 is: 14,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.70 : 42,943.26 = 9,910.66 : x
  2. Step 2: Convert to fraction form
    28,635.70/42,943.26 = 9,910.66/x
  3. Step 3: Cross multiply
    28,635.70x = 42,943.26 × 9,910.66
  4. Step 4: Simplify right side
    28,635.70x = 425,596,049.15
  5. Step 5: Solve for x
    x = 425,596,049.15/28,635.70
  6. Step 6: Final answer
    x = 14,862.43

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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.