Home / 20,124.56-27,759.26-12,963.75

Finding the Fourth Proportional to 20,124.56, 27,759.26 and 12,963.75

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Solution

The fourth proportional to 20,124.56, 27,759.26 and 12,963.75 is: 17,881.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.56 : 27,759.26 = 12,963.75 : x
  2. Step 2: Convert to fraction form
    20,124.56/27,759.26 = 12,963.75/x
  3. Step 3: Cross multiply
    20,124.56x = 27,759.26 × 12,963.75
  4. Step 4: Simplify right side
    20,124.56x = 359,864,042.01
  5. Step 5: Solve for x
    x = 359,864,042.01/20,124.56
  6. Step 6: Final answer
    x = 17,881.84

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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.