Home / 20,178.79-27,854.28-17,334.78

Finding the Fourth Proportional to 20,178.79, 27,854.28 and 17,334.78

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Solution

The fourth proportional to 20,178.79, 27,854.28 and 17,334.78 is: 23,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.79 : 27,854.28 = 17,334.78 : x
  2. Step 2: Convert to fraction form
    20,178.79/27,854.28 = 17,334.78/x
  3. Step 3: Cross multiply
    20,178.79x = 27,854.28 × 17,334.78
  4. Step 4: Simplify right side
    20,178.79x = 482,847,711.40
  5. Step 5: Solve for x
    x = 482,847,711.40/20,178.79
  6. Step 6: Final answer
    x = 23,928.48

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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.