Home / 14,720.72-20,314.17-8,347.89

Finding the Fourth Proportional to 14,720.72, 20,314.17 and 8,347.89

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Solution

The fourth proportional to 14,720.72, 20,314.17 and 8,347.89 is: 11,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.72 : 20,314.17 = 8,347.89 : x
  2. Step 2: Convert to fraction form
    14,720.72/20,314.17 = 8,347.89/x
  3. Step 3: Cross multiply
    14,720.72x = 20,314.17 × 8,347.89
  4. Step 4: Simplify right side
    14,720.72x = 169,580,456.60
  5. Step 5: Solve for x
    x = 169,580,456.60/14,720.72
  6. Step 6: Final answer
    x = 11,519.85

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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.