Home / 20,531.39-30,720.18-14,621.93

Finding the Fourth Proportional to 20,531.39, 30,720.18 and 14,621.93

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Solution

The fourth proportional to 20,531.39, 30,720.18 and 14,621.93 is: 21,878.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.39 : 30,720.18 = 14,621.93 : x
  2. Step 2: Convert to fraction form
    20,531.39/30,720.18 = 14,621.93/x
  3. Step 3: Cross multiply
    20,531.39x = 30,720.18 × 14,621.93
  4. Step 4: Simplify right side
    20,531.39x = 449,188,167.95
  5. Step 5: Solve for x
    x = 449,188,167.95/20,531.39
  6. Step 6: Final answer
    x = 21,878.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.