Home / 21,454.28-32,186.88-11,580

Finding the Fourth Proportional to 21,454.28, 32,186.88 and 11,580

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Solution

The fourth proportional to 21,454.28, 32,186.88 and 11,580 is: 17,372.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.28 : 32,186.88 = 11,580 : x
  2. Step 2: Convert to fraction form
    21,454.28/32,186.88 = 11,580/x
  3. Step 3: Cross multiply
    21,454.28x = 32,186.88 × 11,580
  4. Step 4: Simplify right side
    21,454.28x = 372,724,070.40
  5. Step 5: Solve for x
    x = 372,724,070.40/21,454.28
  6. Step 6: Final answer
    x = 17,372.95

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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.