Home / 13,545.78-20,318.67-5,749.13

Finding the Fourth Proportional to 13,545.78, 20,318.67 and 5,749.13

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Solution

The fourth proportional to 13,545.78, 20,318.67 and 5,749.13 is: 8,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.78 : 20,318.67 = 5,749.13 : x
  2. Step 2: Convert to fraction form
    13,545.78/20,318.67 = 5,749.13/x
  3. Step 3: Cross multiply
    13,545.78x = 20,318.67 × 5,749.13
  4. Step 4: Simplify right side
    13,545.78x = 116,814,675.26
  5. Step 5: Solve for x
    x = 116,814,675.26/13,545.78
  6. Step 6: Final answer
    x = 8,623.70

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Similar ratio
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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.