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Finding the Fourth Proportional to 21,637.33, 32,443.84 and 8,122.88

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Solution

The fourth proportional to 21,637.33, 32,443.84 and 8,122.88 is: 12,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.33 : 32,443.84 = 8,122.88 : x
  2. Step 2: Convert to fraction form
    21,637.33/32,443.84 = 8,122.88/x
  3. Step 3: Cross multiply
    21,637.33x = 32,443.84 × 8,122.88
  4. Step 4: Simplify right side
    21,637.33x = 263,537,510.32
  5. Step 5: Solve for x
    x = 263,537,510.32/21,637.33
  6. Step 6: Final answer
    x = 12,179.76

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1.5x scale

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.