Home / 38,990.85-58,512.23-21,225.99

Finding the Fourth Proportional to 38,990.85, 58,512.23 and 21,225.99

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Solution

The fourth proportional to 38,990.85, 58,512.23 and 21,225.99 is: 31,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.85 : 58,512.23 = 21,225.99 : x
  2. Step 2: Convert to fraction form
    38,990.85/58,512.23 = 21,225.99/x
  3. Step 3: Cross multiply
    38,990.85x = 58,512.23 × 21,225.99
  4. Step 4: Simplify right side
    38,990.85x = 1,241,979,902.73
  5. Step 5: Solve for x
    x = 1,241,979,902.73/38,990.85
  6. Step 6: Final answer
    x = 31,853.11

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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.