Home / 19,974.75-27,565.16-11,142.75

Finding the Fourth Proportional to 19,974.75, 27,565.16 and 11,142.75

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Solution

The fourth proportional to 19,974.75, 27,565.16 and 11,142.75 is: 15,377.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,974.75 : 27,565.16 = 11,142.75 : x
  2. Step 2: Convert to fraction form
    19,974.75/27,565.16 = 11,142.75/x
  3. Step 3: Cross multiply
    19,974.75x = 27,565.16 × 11,142.75
  4. Step 4: Simplify right side
    19,974.75x = 307,151,630.88
  5. Step 5: Solve for x
    x = 307,151,630.88/19,974.75
  6. Step 6: Final answer
    x = 15,377.00

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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.