Home / 25,972.61-38,949.20-20,490.53

Finding the Fourth Proportional to 25,972.61, 38,949.20 and 20,490.53

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Solution

The fourth proportional to 25,972.61, 38,949.20 and 20,490.53 is: 30,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,972.61 : 38,949.20 = 20,490.53 : x
  2. Step 2: Convert to fraction form
    25,972.61/38,949.20 = 20,490.53/x
  3. Step 3: Cross multiply
    25,972.61x = 38,949.20 × 20,490.53
  4. Step 4: Simplify right side
    25,972.61x = 798,089,648.62
  5. Step 5: Solve for x
    x = 798,089,648.62/25,972.61
  6. Step 6: Final answer
    x = 30,728.13

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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.