Home / 21,055.28-31,586.04-7,010.72

Finding the Fourth Proportional to 21,055.28, 31,586.04 and 7,010.72

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Solution

The fourth proportional to 21,055.28, 31,586.04 and 7,010.72 is: 10,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.28 : 31,586.04 = 7,010.72 : x
  2. Step 2: Convert to fraction form
    21,055.28/31,586.04 = 7,010.72/x
  3. Step 3: Cross multiply
    21,055.28x = 31,586.04 × 7,010.72
  4. Step 4: Simplify right side
    21,055.28x = 221,440,882.35
  5. Step 5: Solve for x
    x = 221,440,882.35/21,055.28
  6. Step 6: Final answer
    x = 10,517.12

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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.