Home / 20,052.11-27,667.13-12,787.20

Finding the Fourth Proportional to 20,052.11, 27,667.13 and 12,787.20

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Solution

The fourth proportional to 20,052.11, 27,667.13 and 12,787.20 is: 17,643.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,052.11 : 27,667.13 = 12,787.20 : x
  2. Step 2: Convert to fraction form
    20,052.11/27,667.13 = 12,787.20/x
  3. Step 3: Cross multiply
    20,052.11x = 27,667.13 × 12,787.20
  4. Step 4: Simplify right side
    20,052.11x = 353,785,060.80
  5. Step 5: Solve for x
    x = 353,785,060.80/20,052.11
  6. Step 6: Final answer
    x = 17,643.28

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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.