Home / 21,541.97-29,729.28-12,111.14

Finding the Fourth Proportional to 21,541.97, 29,729.28 and 12,111.14

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Solution

The fourth proportional to 21,541.97, 29,729.28 and 12,111.14 is: 16,714.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.97 : 29,729.28 = 12,111.14 : x
  2. Step 2: Convert to fraction form
    21,541.97/29,729.28 = 12,111.14/x
  3. Step 3: Cross multiply
    21,541.97x = 29,729.28 × 12,111.14
  4. Step 4: Simplify right side
    21,541.97x = 360,055,323.53
  5. Step 5: Solve for x
    x = 360,055,323.53/21,541.97
  6. Step 6: Final answer
    x = 16,714.14

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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.