Home / 21,549.70-29,731.66-13,049.10

Finding the Fourth Proportional to 21,549.70, 29,731.66 and 13,049.10

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Solution

The fourth proportional to 21,549.70, 29,731.66 and 13,049.10 is: 18,003.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.70 : 29,731.66 = 13,049.10 : x
  2. Step 2: Convert to fraction form
    21,549.70/29,731.66 = 13,049.10/x
  3. Step 3: Cross multiply
    21,549.70x = 29,731.66 × 13,049.10
  4. Step 4: Simplify right side
    21,549.70x = 387,971,371.88
  5. Step 5: Solve for x
    x = 387,971,371.88/21,549.70
  6. Step 6: Final answer
    x = 18,003.57

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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.