Home / 20,770.13-28,700.26-14,791.42

Finding the Fourth Proportional to 20,770.13, 28,700.26 and 14,791.42

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Solution

The fourth proportional to 20,770.13, 28,700.26 and 14,791.42 is: 20,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.13 : 28,700.26 = 14,791.42 : x
  2. Step 2: Convert to fraction form
    20,770.13/28,700.26 = 14,791.42/x
  3. Step 3: Cross multiply
    20,770.13x = 28,700.26 × 14,791.42
  4. Step 4: Simplify right side
    20,770.13x = 424,517,599.77
  5. Step 5: Solve for x
    x = 424,517,599.77/20,770.13
  6. Step 6: Final answer
    x = 20,438.85

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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.