Home / 18,345.16-25,316.10-9,961.72

Finding the Fourth Proportional to 18,345.16, 25,316.10 and 9,961.72

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Solution

The fourth proportional to 18,345.16, 25,316.10 and 9,961.72 is: 13,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.16 : 25,316.10 = 9,961.72 : x
  2. Step 2: Convert to fraction form
    18,345.16/25,316.10 = 9,961.72/x
  3. Step 3: Cross multiply
    18,345.16x = 25,316.10 × 9,961.72
  4. Step 4: Simplify right side
    18,345.16x = 252,191,899.69
  5. Step 5: Solve for x
    x = 252,191,899.69/18,345.16
  6. Step 6: Final answer
    x = 13,747.05

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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.