Home / 28,781.33-43,079.65-15,420.98

Finding the Fourth Proportional to 28,781.33, 43,079.65 and 15,420.98

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Solution

The fourth proportional to 28,781.33, 43,079.65 and 15,420.98 is: 23,082.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.33 : 43,079.65 = 15,420.98 : x
  2. Step 2: Convert to fraction form
    28,781.33/43,079.65 = 15,420.98/x
  3. Step 3: Cross multiply
    28,781.33x = 43,079.65 × 15,420.98
  4. Step 4: Simplify right side
    28,781.33x = 664,330,490.20
  5. Step 5: Solve for x
    x = 664,330,490.20/28,781.33
  6. Step 6: Final answer
    x = 23,082.00

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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.