Home / 25,872.40-38,808.60-17,999.20

Finding the Fourth Proportional to 25,872.40, 38,808.60 and 17,999.20

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Solution

The fourth proportional to 25,872.40, 38,808.60 and 17,999.20 is: 26,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,872.40 : 38,808.60 = 17,999.20 : x
  2. Step 2: Convert to fraction form
    25,872.40/38,808.60 = 17,999.20/x
  3. Step 3: Cross multiply
    25,872.40x = 38,808.60 × 17,999.20
  4. Step 4: Simplify right side
    25,872.40x = 698,523,753.12
  5. Step 5: Solve for x
    x = 698,523,753.12/25,872.40
  6. Step 6: Final answer
    x = 26,998.80

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1.5x scale

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.