Home / 20,566.53-28,381.77-11,135.12

Finding the Fourth Proportional to 20,566.53, 28,381.77 and 11,135.12

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Solution

The fourth proportional to 20,566.53, 28,381.77 and 11,135.12 is: 15,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.53 : 28,381.77 = 11,135.12 : x
  2. Step 2: Convert to fraction form
    20,566.53/28,381.77 = 11,135.12/x
  3. Step 3: Cross multiply
    20,566.53x = 28,381.77 × 11,135.12
  4. Step 4: Simplify right side
    20,566.53x = 316,034,272.85
  5. Step 5: Solve for x
    x = 316,034,272.85/20,566.53
  6. Step 6: Final answer
    x = 15,366.44

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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.