Home / 20,545.39-28,352.64-11,113.96

Finding the Fourth Proportional to 20,545.39, 28,352.64 and 11,113.96

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Solution

The fourth proportional to 20,545.39, 28,352.64 and 11,113.96 is: 15,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.39 : 28,352.64 = 11,113.96 : x
  2. Step 2: Convert to fraction form
    20,545.39/28,352.64 = 11,113.96/x
  3. Step 3: Cross multiply
    20,545.39x = 28,352.64 × 11,113.96
  4. Step 4: Simplify right side
    20,545.39x = 315,110,106.85
  5. Step 5: Solve for x
    x = 315,110,106.85/20,545.39
  6. Step 6: Final answer
    x = 15,337.27

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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.