Home / 25,119.72-34,672.46-20,118.78

Finding the Fourth Proportional to 25,119.72, 34,672.46 and 20,118.78

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Solution

The fourth proportional to 25,119.72, 34,672.46 and 20,118.78 is: 27,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,119.72 : 34,672.46 = 20,118.78 : x
  2. Step 2: Convert to fraction form
    25,119.72/34,672.46 = 20,118.78/x
  3. Step 3: Cross multiply
    25,119.72x = 34,672.46 × 20,118.78
  4. Step 4: Simplify right side
    25,119.72x = 697,567,494.20
  5. Step 5: Solve for x
    x = 697,567,494.20/25,119.72
  6. Step 6: Final answer
    x = 27,769.72

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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.