Home / 21,830.40-32,758.30-9,179.24

Finding the Fourth Proportional to 21,830.40, 32,758.30 and 9,179.24

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Solution

The fourth proportional to 21,830.40, 32,758.30 and 9,179.24 is: 13,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.40 : 32,758.30 = 9,179.24 : x
  2. Step 2: Convert to fraction form
    21,830.40/32,758.30 = 9,179.24/x
  3. Step 3: Cross multiply
    21,830.40x = 32,758.30 × 9,179.24
  4. Step 4: Simplify right side
    21,830.40x = 300,696,355.46
  5. Step 5: Solve for x
    x = 300,696,355.46/21,830.40
  6. Step 6: Final answer
    x = 13,774.20

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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.