Home / 22,780.89-34,171.56-7,990.16

Finding the Fourth Proportional to 22,780.89, 34,171.56 and 7,990.16

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Solution

The fourth proportional to 22,780.89, 34,171.56 and 7,990.16 is: 11,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.89 : 34,171.56 = 7,990.16 : x
  2. Step 2: Convert to fraction form
    22,780.89/34,171.56 = 7,990.16/x
  3. Step 3: Cross multiply
    22,780.89x = 34,171.56 × 7,990.16
  4. Step 4: Simplify right side
    22,780.89x = 273,036,060.99
  5. Step 5: Solve for x
    x = 273,036,060.99/22,780.89
  6. Step 6: Final answer
    x = 11,985.31

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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.