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Finding the Fourth Proportional to 20,806.60, 31,092.29 and 14,974.60

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Solution

The fourth proportional to 20,806.60, 31,092.29 and 14,974.60 is: 22,377.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.60 : 31,092.29 = 14,974.60 : x
  2. Step 2: Convert to fraction form
    20,806.60/31,092.29 = 14,974.60/x
  3. Step 3: Cross multiply
    20,806.60x = 31,092.29 × 14,974.60
  4. Step 4: Simplify right side
    20,806.60x = 465,594,605.83
  5. Step 5: Solve for x
    x = 465,594,605.83/20,806.60
  6. Step 6: Final answer
    x = 22,377.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.