Home / 20,122.53-27,778.40-12,060.02

Finding the Fourth Proportional to 20,122.53, 27,778.40 and 12,060.02

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Solution

The fourth proportional to 20,122.53, 27,778.40 and 12,060.02 is: 16,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.53 : 27,778.40 = 12,060.02 : x
  2. Step 2: Convert to fraction form
    20,122.53/27,778.40 = 12,060.02/x
  3. Step 3: Cross multiply
    20,122.53x = 27,778.40 × 12,060.02
  4. Step 4: Simplify right side
    20,122.53x = 335,007,860.38
  5. Step 5: Solve for x
    x = 335,007,860.38/20,122.53
  6. Step 6: Final answer
    x = 16,648.40

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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.