Home / 18,207.78-25,121.50-12,544.05

Finding the Fourth Proportional to 18,207.78, 25,121.50 and 12,544.05

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Solution

The fourth proportional to 18,207.78, 25,121.50 and 12,544.05 is: 17,307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.78 : 25,121.50 = 12,544.05 : x
  2. Step 2: Convert to fraction form
    18,207.78/25,121.50 = 12,544.05/x
  3. Step 3: Cross multiply
    18,207.78x = 25,121.50 × 12,544.05
  4. Step 4: Simplify right side
    18,207.78x = 315,125,352.08
  5. Step 5: Solve for x
    x = 315,125,352.08/18,207.78
  6. Step 6: Final answer
    x = 17,307.18

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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.