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Finding the Fourth Proportional to 18,300.74, 25,242.04 and 15,494.10

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Solution

The fourth proportional to 18,300.74, 25,242.04 and 15,494.10 is: 21,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.74 : 25,242.04 = 15,494.10 : x
  2. Step 2: Convert to fraction form
    18,300.74/25,242.04 = 15,494.10/x
  3. Step 3: Cross multiply
    18,300.74x = 25,242.04 × 15,494.10
  4. Step 4: Simplify right side
    18,300.74x = 391,102,691.96
  5. Step 5: Solve for x
    x = 391,102,691.96/18,300.74
  6. Step 6: Final answer
    x = 21,370.87

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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.