Home / 14,845.47-20,486.85-8,131.71

Finding the Fourth Proportional to 14,845.47, 20,486.85 and 8,131.71

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Solution

The fourth proportional to 14,845.47, 20,486.85 and 8,131.71 is: 11,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,845.47 : 20,486.85 = 8,131.71 : x
  2. Step 2: Convert to fraction form
    14,845.47/20,486.85 = 8,131.71/x
  3. Step 3: Cross multiply
    14,845.47x = 20,486.85 × 8,131.71
  4. Step 4: Simplify right side
    14,845.47x = 166,593,123.01
  5. Step 5: Solve for x
    x = 166,593,123.01/14,845.47
  6. Step 6: Final answer
    x = 11,221.82

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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.