Home / 20,677.26-28,534.91-15,493.96

Finding the Fourth Proportional to 20,677.26, 28,534.91 and 15,493.96

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Solution

The fourth proportional to 20,677.26, 28,534.91 and 15,493.96 is: 21,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.26 : 28,534.91 = 15,493.96 : x
  2. Step 2: Convert to fraction form
    20,677.26/28,534.91 = 15,493.96/x
  3. Step 3: Cross multiply
    20,677.26x = 28,534.91 × 15,493.96
  4. Step 4: Simplify right side
    20,677.26x = 442,118,754.14
  5. Step 5: Solve for x
    x = 442,118,754.14/20,677.26
  6. Step 6: Final answer
    x = 21,381.88

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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.