Home / 21,534.74-32,305.35-7,680.50

Finding the Fourth Proportional to 21,534.74, 32,305.35 and 7,680.50

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Solution

The fourth proportional to 21,534.74, 32,305.35 and 7,680.50 is: 11,521.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,534.74 : 32,305.35 = 7,680.50 : x
  2. Step 2: Convert to fraction form
    21,534.74/32,305.35 = 7,680.50/x
  3. Step 3: Cross multiply
    21,534.74x = 32,305.35 × 7,680.50
  4. Step 4: Simplify right side
    21,534.74x = 248,121,240.68
  5. Step 5: Solve for x
    x = 248,121,240.68/21,534.74
  6. Step 6: Final answer
    x = 11,521.91

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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.