Home / 14,381.52-21,575-5,615.88

Finding the Fourth Proportional to 14,381.52, 21,575 and 5,615.88

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Solution

The fourth proportional to 14,381.52, 21,575 and 5,615.88 is: 8,424.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,381.52 : 21,575 = 5,615.88 : x
  2. Step 2: Convert to fraction form
    14,381.52/21,575 = 5,615.88/x
  3. Step 3: Cross multiply
    14,381.52x = 21,575 × 5,615.88
  4. Step 4: Simplify right side
    14,381.52x = 121,162,611
  5. Step 5: Solve for x
    x = 121,162,611/14,381.52
  6. Step 6: Final answer
    x = 8,424.88

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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.