Home / 13,689.50-20,531.61-5,789.43

Finding the Fourth Proportional to 13,689.50, 20,531.61 and 5,789.43

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Solution

The fourth proportional to 13,689.50, 20,531.61 and 5,789.43 is: 8,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.50 : 20,531.61 = 5,789.43 : x
  2. Step 2: Convert to fraction form
    13,689.50/20,531.61 = 5,789.43/x
  3. Step 3: Cross multiply
    13,689.50x = 20,531.61 × 5,789.43
  4. Step 4: Simplify right side
    13,689.50x = 118,866,318.88
  5. Step 5: Solve for x
    x = 118,866,318.88/13,689.50
  6. Step 6: Final answer
    x = 8,683.03

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1.5x scale

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.