Home / 18,345.30-25,316.62-9,961.80

Finding the Fourth Proportional to 18,345.30, 25,316.62 and 9,961.80

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Solution

The fourth proportional to 18,345.30, 25,316.62 and 9,961.80 is: 13,747.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.30 : 25,316.62 = 9,961.80 : x
  2. Step 2: Convert to fraction form
    18,345.30/25,316.62 = 9,961.80/x
  3. Step 3: Cross multiply
    18,345.30x = 25,316.62 × 9,961.80
  4. Step 4: Simplify right side
    18,345.30x = 252,199,105.12
  5. Step 5: Solve for x
    x = 252,199,105.12/18,345.30
  6. Step 6: Final answer
    x = 13,747.34

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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.