Home / 20,718.18-31,084.56-9,029.88

Finding the Fourth Proportional to 20,718.18, 31,084.56 and 9,029.88

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Solution

The fourth proportional to 20,718.18, 31,084.56 and 9,029.88 is: 13,548.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.18 : 31,084.56 = 9,029.88 : x
  2. Step 2: Convert to fraction form
    20,718.18/31,084.56 = 9,029.88/x
  3. Step 3: Cross multiply
    20,718.18x = 31,084.56 × 9,029.88
  4. Step 4: Simplify right side
    20,718.18x = 280,689,846.65
  5. Step 5: Solve for x
    x = 280,689,846.65/20,718.18
  6. Step 6: Final answer
    x = 13,548.00

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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.