Home / 13,589.16-20,387.38-5,687.50

Finding the Fourth Proportional to 13,589.16, 20,387.38 and 5,687.50

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Solution

The fourth proportional to 13,589.16, 20,387.38 and 5,687.50 is: 8,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.16 : 20,387.38 = 5,687.50 : x
  2. Step 2: Convert to fraction form
    13,589.16/20,387.38 = 5,687.50/x
  3. Step 3: Cross multiply
    13,589.16x = 20,387.38 × 5,687.50
  4. Step 4: Simplify right side
    13,589.16x = 115,953,223.75
  5. Step 5: Solve for x
    x = 115,953,223.75/13,589.16
  6. Step 6: Final answer
    x = 8,532.77

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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.