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Finding the Fourth Proportional to 16,279.80, 24,346.80 and 13,655.40

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Solution

The fourth proportional to 16,279.80, 24,346.80 and 13,655.40 is: 20,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,279.80 : 24,346.80 = 13,655.40 : x
  2. Step 2: Convert to fraction form
    16,279.80/24,346.80 = 13,655.40/x
  3. Step 3: Cross multiply
    16,279.80x = 24,346.80 × 13,655.40
  4. Step 4: Simplify right side
    16,279.80x = 332,465,292.72
  5. Step 5: Solve for x
    x = 332,465,292.72/16,279.80
  6. Step 6: Final answer
    x = 20,421.95

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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.