Home / 10,720.71-16,091.45-5,177.95

Finding the Fourth Proportional to 10,720.71, 16,091.45 and 5,177.95

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Solution

The fourth proportional to 10,720.71, 16,091.45 and 5,177.95 is: 7,771.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.71 : 16,091.45 = 5,177.95 : x
  2. Step 2: Convert to fraction form
    10,720.71/16,091.45 = 5,177.95/x
  3. Step 3: Cross multiply
    10,720.71x = 16,091.45 × 5,177.95
  4. Step 4: Simplify right side
    10,720.71x = 83,320,723.53
  5. Step 5: Solve for x
    x = 83,320,723.53/10,720.71
  6. Step 6: Final answer
    x = 7,771.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.