Home / 14,687.13-20,269.46-8,400.72

Finding the Fourth Proportional to 14,687.13, 20,269.46 and 8,400.72

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Solution

The fourth proportional to 14,687.13, 20,269.46 and 8,400.72 is: 11,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.13 : 20,269.46 = 8,400.72 : x
  2. Step 2: Convert to fraction form
    14,687.13/20,269.46 = 8,400.72/x
  3. Step 3: Cross multiply
    14,687.13x = 20,269.46 × 8,400.72
  4. Step 4: Simplify right side
    14,687.13x = 170,278,058.01
  5. Step 5: Solve for x
    x = 170,278,058.01/14,687.13
  6. Step 6: Final answer
    x = 11,593.69

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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.