Home / 13,591.01-18,756.23-8,489.55

Finding the Fourth Proportional to 13,591.01, 18,756.23 and 8,489.55

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Solution

The fourth proportional to 13,591.01, 18,756.23 and 8,489.55 is: 11,715.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.01 : 18,756.23 = 8,489.55 : x
  2. Step 2: Convert to fraction form
    13,591.01/18,756.23 = 8,489.55/x
  3. Step 3: Cross multiply
    13,591.01x = 18,756.23 × 8,489.55
  4. Step 4: Simplify right side
    13,591.01x = 159,231,816.17
  5. Step 5: Solve for x
    x = 159,231,816.17/13,591.01
  6. Step 6: Final answer
    x = 11,715.97

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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.