Home / 20,545.52-28,352.79-11,114.06

Finding the Fourth Proportional to 20,545.52, 28,352.79 and 11,114.06

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Solution

The fourth proportional to 20,545.52, 28,352.79 and 11,114.06 is: 15,337.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.52 : 28,352.79 = 11,114.06 : x
  2. Step 2: Convert to fraction form
    20,545.52/28,352.79 = 11,114.06/x
  3. Step 3: Cross multiply
    20,545.52x = 28,352.79 × 11,114.06
  4. Step 4: Simplify right side
    20,545.52x = 315,114,609.23
  5. Step 5: Solve for x
    x = 315,114,609.23/20,545.52
  6. Step 6: Final answer
    x = 15,337.39

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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.