Home / 18,345.25-25,316.45-9,961.75

Finding the Fourth Proportional to 18,345.25, 25,316.45 and 9,961.75

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Solution

The fourth proportional to 18,345.25, 25,316.45 and 9,961.75 is: 13,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.25 : 25,316.45 = 9,961.75 : x
  2. Step 2: Convert to fraction form
    18,345.25/25,316.45 = 9,961.75/x
  3. Step 3: Cross multiply
    18,345.25x = 25,316.45 × 9,961.75
  4. Step 4: Simplify right side
    18,345.25x = 252,196,145.79
  5. Step 5: Solve for x
    x = 252,196,145.79/18,345.25
  6. Step 6: Final answer
    x = 13,747.22

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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.