Home / 16,247.20-22,421.72-8,979.35

Finding the Fourth Proportional to 16,247.20, 22,421.72 and 8,979.35

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Solution

The fourth proportional to 16,247.20, 22,421.72 and 8,979.35 is: 12,391.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,247.20 : 22,421.72 = 8,979.35 : x
  2. Step 2: Convert to fraction form
    16,247.20/22,421.72 = 8,979.35/x
  3. Step 3: Cross multiply
    16,247.20x = 22,421.72 × 8,979.35
  4. Step 4: Simplify right side
    16,247.20x = 201,332,504.81
  5. Step 5: Solve for x
    x = 201,332,504.81/16,247.20
  6. Step 6: Final answer
    x = 12,391.83

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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.