Home / 25,203.11-34,780.32-13,872.20

Finding the Fourth Proportional to 25,203.11, 34,780.32 and 13,872.20

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Solution

The fourth proportional to 25,203.11, 34,780.32 and 13,872.20 is: 19,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,203.11 : 34,780.32 = 13,872.20 : x
  2. Step 2: Convert to fraction form
    25,203.11/34,780.32 = 13,872.20/x
  3. Step 3: Cross multiply
    25,203.11x = 34,780.32 × 13,872.20
  4. Step 4: Simplify right side
    25,203.11x = 482,479,381.20
  5. Step 5: Solve for x
    x = 482,479,381.20/25,203.11
  6. Step 6: Final answer
    x = 19,143.65

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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.