Home / 20,126.88-27,781.92-11,750.40

Finding the Fourth Proportional to 20,126.88, 27,781.92 and 11,750.40

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Solution

The fourth proportional to 20,126.88, 27,781.92 and 11,750.40 is: 16,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.88 : 27,781.92 = 11,750.40 : x
  2. Step 2: Convert to fraction form
    20,126.88/27,781.92 = 11,750.40/x
  3. Step 3: Cross multiply
    20,126.88x = 27,781.92 × 11,750.40
  4. Step 4: Simplify right side
    20,126.88x = 326,448,672.77
  5. Step 5: Solve for x
    x = 326,448,672.77/20,126.88
  6. Step 6: Final answer
    x = 16,219.54

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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.