Home / 20,838.04-28,755.37-11,404.78

Finding the Fourth Proportional to 20,838.04, 28,755.37 and 11,404.78

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Solution

The fourth proportional to 20,838.04, 28,755.37 and 11,404.78 is: 15,737.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.04 : 28,755.37 = 11,404.78 : x
  2. Step 2: Convert to fraction form
    20,838.04/28,755.37 = 11,404.78/x
  3. Step 3: Cross multiply
    20,838.04x = 28,755.37 × 11,404.78
  4. Step 4: Simplify right side
    20,838.04x = 327,948,668.67
  5. Step 5: Solve for x
    x = 327,948,668.67/20,838.04
  6. Step 6: Final answer
    x = 15,737.98

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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.