Home / 20,012.88-27,612.79-11,397.11

Finding the Fourth Proportional to 20,012.88, 27,612.79 and 11,397.11

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Solution

The fourth proportional to 20,012.88, 27,612.79 and 11,397.11 is: 15,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,012.88 : 27,612.79 = 11,397.11 : x
  2. Step 2: Convert to fraction form
    20,012.88/27,612.79 = 11,397.11/x
  3. Step 3: Cross multiply
    20,012.88x = 27,612.79 × 11,397.11
  4. Step 4: Simplify right side
    20,012.88x = 314,706,045.58
  5. Step 5: Solve for x
    x = 314,706,045.58/20,012.88
  6. Step 6: Final answer
    x = 15,725.18

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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.