Home / 18,345.39-25,316.61-9,961.89

Finding the Fourth Proportional to 18,345.39, 25,316.61 and 9,961.89

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Solution

The fourth proportional to 18,345.39, 25,316.61 and 9,961.89 is: 13,747.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.39 : 25,316.61 = 9,961.89 : x
  2. Step 2: Convert to fraction form
    18,345.39/25,316.61 = 9,961.89/x
  3. Step 3: Cross multiply
    18,345.39x = 25,316.61 × 9,961.89
  4. Step 4: Simplify right side
    18,345.39x = 252,201,283.99
  5. Step 5: Solve for x
    x = 252,201,283.99/18,345.39
  6. Step 6: Final answer
    x = 13,747.39

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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.