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Finding the Fourth Proportional to 18,767.60, 25,901 and 10,385.68

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Solution

The fourth proportional to 18,767.60, 25,901 and 10,385.68 is: 14,333.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.60 : 25,901 = 10,385.68 : x
  2. Step 2: Convert to fraction form
    18,767.60/25,901 = 10,385.68/x
  3. Step 3: Cross multiply
    18,767.60x = 25,901 × 10,385.68
  4. Step 4: Simplify right side
    18,767.60x = 268,999,497.68
  5. Step 5: Solve for x
    x = 268,999,497.68/18,767.60
  6. Step 6: Final answer
    x = 14,333.19

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1.5x scale

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.