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Finding the Fourth Proportional to 18,108.81, 24,988.90 and 10,042.89

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Solution

The fourth proportional to 18,108.81, 24,988.90 and 10,042.89 is: 13,858.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,108.81 : 24,988.90 = 10,042.89 : x
  2. Step 2: Convert to fraction form
    18,108.81/24,988.90 = 10,042.89/x
  3. Step 3: Cross multiply
    18,108.81x = 24,988.90 × 10,042.89
  4. Step 4: Simplify right side
    18,108.81x = 250,960,773.92
  5. Step 5: Solve for x
    x = 250,960,773.92/18,108.81
  6. Step 6: Final answer
    x = 13,858.49

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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.