Home / 21,534.24-32,304.60-7,680

Finding the Fourth Proportional to 21,534.24, 32,304.60 and 7,680

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Solution

The fourth proportional to 21,534.24, 32,304.60 and 7,680 is: 11,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,534.24 : 32,304.60 = 7,680 : x
  2. Step 2: Convert to fraction form
    21,534.24/32,304.60 = 7,680/x
  3. Step 3: Cross multiply
    21,534.24x = 32,304.60 × 7,680
  4. Step 4: Simplify right side
    21,534.24x = 248,099,328
  5. Step 5: Solve for x
    x = 248,099,328/21,534.24
  6. Step 6: Final answer
    x = 11,521.16

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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.