Home / 21,082.12-31,641.36-11,731.48

Finding the Fourth Proportional to 21,082.12, 31,641.36 and 11,731.48

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Solution

The fourth proportional to 21,082.12, 31,641.36 and 11,731.48 is: 17,607.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.12 : 31,641.36 = 11,731.48 : x
  2. Step 2: Convert to fraction form
    21,082.12/31,641.36 = 11,731.48/x
  3. Step 3: Cross multiply
    21,082.12x = 31,641.36 × 11,731.48
  4. Step 4: Simplify right side
    21,082.12x = 371,199,982.01
  5. Step 5: Solve for x
    x = 371,199,982.01/21,082.12
  6. Step 6: Final answer
    x = 17,607.34

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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.