Home / 28,605.60-39,478.05-15,862.77

Finding the Fourth Proportional to 28,605.60, 39,478.05 and 15,862.77

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Solution

The fourth proportional to 28,605.60, 39,478.05 and 15,862.77 is: 21,891.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.60 : 39,478.05 = 15,862.77 : x
  2. Step 2: Convert to fraction form
    28,605.60/39,478.05 = 15,862.77/x
  3. Step 3: Cross multiply
    28,605.60x = 39,478.05 × 15,862.77
  4. Step 4: Simplify right side
    28,605.60x = 626,231,227.20
  5. Step 5: Solve for x
    x = 626,231,227.20/28,605.60
  6. Step 6: Final answer
    x = 21,891.91

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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.