Home / 25,454.09-38,161.31-12,120.21

Finding the Fourth Proportional to 25,454.09, 38,161.31 and 12,120.21

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Solution

The fourth proportional to 25,454.09, 38,161.31 and 12,120.21 is: 18,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,454.09 : 38,161.31 = 12,120.21 : x
  2. Step 2: Convert to fraction form
    25,454.09/38,161.31 = 12,120.21/x
  3. Step 3: Cross multiply
    25,454.09x = 38,161.31 × 12,120.21
  4. Step 4: Simplify right side
    25,454.09x = 462,523,030.47
  5. Step 5: Solve for x
    x = 462,523,030.47/25,454.09
  6. Step 6: Final answer
    x = 18,170.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.