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Finding the Fourth Proportional to 18,487.63, 25,513.01 and 10,104.13

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Solution

The fourth proportional to 18,487.63, 25,513.01 and 10,104.13 is: 13,943.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.63 : 25,513.01 = 10,104.13 : x
  2. Step 2: Convert to fraction form
    18,487.63/25,513.01 = 10,104.13/x
  3. Step 3: Cross multiply
    18,487.63x = 25,513.01 × 10,104.13
  4. Step 4: Simplify right side
    18,487.63x = 257,786,769.73
  5. Step 5: Solve for x
    x = 257,786,769.73/18,487.63
  6. Step 6: Final answer
    x = 13,943.74

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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.