Home / 20,538.60-30,820.05-14,977.95

Finding the Fourth Proportional to 20,538.60, 30,820.05 and 14,977.95

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Solution

The fourth proportional to 20,538.60, 30,820.05 and 14,977.95 is: 22,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.60 : 30,820.05 = 14,977.95 : x
  2. Step 2: Convert to fraction form
    20,538.60/30,820.05 = 14,977.95/x
  3. Step 3: Cross multiply
    20,538.60x = 30,820.05 × 14,977.95
  4. Step 4: Simplify right side
    20,538.60x = 461,621,167.90
  5. Step 5: Solve for x
    x = 461,621,167.90/20,538.60
  6. Step 6: Final answer
    x = 22,475.79

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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.