Home / 28,635.80-42,943.40-9,910.75

Finding the Fourth Proportional to 28,635.80, 42,943.40 and 9,910.75

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Solution

The fourth proportional to 28,635.80, 42,943.40 and 9,910.75 is: 14,862.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.80 : 42,943.40 = 9,910.75 : x
  2. Step 2: Convert to fraction form
    28,635.80/42,943.40 = 9,910.75/x
  3. Step 3: Cross multiply
    28,635.80x = 42,943.40 × 9,910.75
  4. Step 4: Simplify right side
    28,635.80x = 425,601,301.55
  5. Step 5: Solve for x
    x = 425,601,301.55/28,635.80
  6. Step 6: Final answer
    x = 14,862.56

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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.