Home / 21,479.10-32,223.78-8,992.17

Finding the Fourth Proportional to 21,479.10, 32,223.78 and 8,992.17

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Solution

The fourth proportional to 21,479.10, 32,223.78 and 8,992.17 is: 13,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.10 : 32,223.78 = 8,992.17 : x
  2. Step 2: Convert to fraction form
    21,479.10/32,223.78 = 8,992.17/x
  3. Step 3: Cross multiply
    21,479.10x = 32,223.78 × 8,992.17
  4. Step 4: Simplify right side
    21,479.10x = 289,761,707.80
  5. Step 5: Solve for x
    x = 289,761,707.80/21,479.10
  6. Step 6: Final answer
    x = 13,490.40

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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.