Home / 21,146.29-29,182.12-11,586.20

Finding the Fourth Proportional to 21,146.29, 29,182.12 and 11,586.20

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Solution

The fourth proportional to 21,146.29, 29,182.12 and 11,586.20 is: 15,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.29 : 29,182.12 = 11,586.20 : x
  2. Step 2: Convert to fraction form
    21,146.29/29,182.12 = 11,586.20/x
  3. Step 3: Cross multiply
    21,146.29x = 29,182.12 × 11,586.20
  4. Step 4: Simplify right side
    21,146.29x = 338,109,716.24
  5. Step 5: Solve for x
    x = 338,109,716.24/21,146.29
  6. Step 6: Final answer
    x = 15,989.08

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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.