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Finding the Fourth Proportional to 18,711.60, 27,930.40 and 16,497.32

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Solution

The fourth proportional to 18,711.60, 27,930.40 and 16,497.32 is: 24,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.60 : 27,930.40 = 16,497.32 : x
  2. Step 2: Convert to fraction form
    18,711.60/27,930.40 = 16,497.32/x
  3. Step 3: Cross multiply
    18,711.60x = 27,930.40 × 16,497.32
  4. Step 4: Simplify right side
    18,711.60x = 460,776,746.53
  5. Step 5: Solve for x
    x = 460,776,746.53/18,711.60
  6. Step 6: Final answer
    x = 24,625.19

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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.