Home / 21,551.76-29,743.92-11,995.20

Finding the Fourth Proportional to 21,551.76, 29,743.92 and 11,995.20

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Solution

The fourth proportional to 21,551.76, 29,743.92 and 11,995.20 is: 16,554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.76 : 29,743.92 = 11,995.20 : x
  2. Step 2: Convert to fraction form
    21,551.76/29,743.92 = 11,995.20/x
  3. Step 3: Cross multiply
    21,551.76x = 29,743.92 × 11,995.20
  4. Step 4: Simplify right side
    21,551.76x = 356,784,269.18
  5. Step 5: Solve for x
    x = 356,784,269.18/21,551.76
  6. Step 6: Final answer
    x = 16,554.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.