Home / 21,125.20-31,685.40-5,544.04

Finding the Fourth Proportional to 21,125.20, 31,685.40 and 5,544.04

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Solution

The fourth proportional to 21,125.20, 31,685.40 and 5,544.04 is: 8,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.20 : 31,685.40 = 5,544.04 : x
  2. Step 2: Convert to fraction form
    21,125.20/31,685.40 = 5,544.04/x
  3. Step 3: Cross multiply
    21,125.20x = 31,685.40 × 5,544.04
  4. Step 4: Simplify right side
    21,125.20x = 175,665,125.02
  5. Step 5: Solve for x
    x = 175,665,125.02/21,125.20
  6. Step 6: Final answer
    x = 8,315.43

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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.