Home / 14,654.91-20,221.61-8,279.81

Finding the Fourth Proportional to 14,654.91, 20,221.61 and 8,279.81

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Solution

The fourth proportional to 14,654.91, 20,221.61 and 8,279.81 is: 11,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,654.91 : 20,221.61 = 8,279.81 : x
  2. Step 2: Convert to fraction form
    14,654.91/20,221.61 = 8,279.81/x
  3. Step 3: Cross multiply
    14,654.91x = 20,221.61 × 8,279.81
  4. Step 4: Simplify right side
    14,654.91x = 167,430,946.19
  5. Step 5: Solve for x
    x = 167,430,946.19/14,654.91
  6. Step 6: Final answer
    x = 11,424.90

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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.