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Finding the Fourth Proportional to 17,658.58, 26,418.03 and 13,678.42

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Solution

The fourth proportional to 17,658.58, 26,418.03 and 13,678.42 is: 20,463.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,658.58 : 26,418.03 = 13,678.42 : x
  2. Step 2: Convert to fraction form
    17,658.58/26,418.03 = 13,678.42/x
  3. Step 3: Cross multiply
    17,658.58x = 26,418.03 × 13,678.42
  4. Step 4: Simplify right side
    17,658.58x = 361,356,909.91
  5. Step 5: Solve for x
    x = 361,356,909.91/17,658.58
  6. Step 6: Final answer
    x = 20,463.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.