Home / 21,020.46-31,531.41-6,981.18

Finding the Fourth Proportional to 21,020.46, 31,531.41 and 6,981.18

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Solution

The fourth proportional to 21,020.46, 31,531.41 and 6,981.18 is: 10,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.46 : 31,531.41 = 6,981.18 : x
  2. Step 2: Convert to fraction form
    21,020.46/31,531.41 = 6,981.18/x
  3. Step 3: Cross multiply
    21,020.46x = 31,531.41 × 6,981.18
  4. Step 4: Simplify right side
    21,020.46x = 220,126,448.86
  5. Step 5: Solve for x
    x = 220,126,448.86/21,020.46
  6. Step 6: Final answer
    x = 10,472.01

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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.