Home / 25,158.83-34,679.61-20,385.90

Finding the Fourth Proportional to 25,158.83, 34,679.61 and 20,385.90

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Solution

The fourth proportional to 25,158.83, 34,679.61 and 20,385.90 is: 28,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,158.83 : 34,679.61 = 20,385.90 : x
  2. Step 2: Convert to fraction form
    25,158.83/34,679.61 = 20,385.90/x
  3. Step 3: Cross multiply
    25,158.83x = 34,679.61 × 20,385.90
  4. Step 4: Simplify right side
    25,158.83x = 706,975,061.50
  5. Step 5: Solve for x
    x = 706,975,061.50/25,158.83
  6. Step 6: Final answer
    x = 28,100.48

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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.