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Finding the Fourth Proportional to 15,602.80, 23,404.20 and 13,658.80

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Solution

The fourth proportional to 15,602.80, 23,404.20 and 13,658.80 is: 20,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.80 : 23,404.20 = 13,658.80 : x
  2. Step 2: Convert to fraction form
    15,602.80/23,404.20 = 13,658.80/x
  3. Step 3: Cross multiply
    15,602.80x = 23,404.20 × 13,658.80
  4. Step 4: Simplify right side
    15,602.80x = 319,673,286.96
  5. Step 5: Solve for x
    x = 319,673,286.96/15,602.80
  6. Step 6: Final answer
    x = 20,488.20

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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.