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Finding the Fourth Proportional to 18,488.05, 25,514.09 and 10,530.10

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Solution

The fourth proportional to 18,488.05, 25,514.09 and 10,530.10 is: 14,531.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.05 : 25,514.09 = 10,530.10 : x
  2. Step 2: Convert to fraction form
    18,488.05/25,514.09 = 10,530.10/x
  3. Step 3: Cross multiply
    18,488.05x = 25,514.09 × 10,530.10
  4. Step 4: Simplify right side
    18,488.05x = 268,665,937.84
  5. Step 5: Solve for x
    x = 268,665,937.84/18,488.05
  6. Step 6: Final answer
    x = 14,531.87

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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.