Home / 18,345.36-25,316.64-9,961.68

Finding the Fourth Proportional to 18,345.36, 25,316.64 and 9,961.68

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Solution

The fourth proportional to 18,345.36, 25,316.64 and 9,961.68 is: 13,747.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.36 : 25,316.64 = 9,961.68 : x
  2. Step 2: Convert to fraction form
    18,345.36/25,316.64 = 9,961.68/x
  3. Step 3: Cross multiply
    18,345.36x = 25,316.64 × 9,961.68
  4. Step 4: Simplify right side
    18,345.36x = 252,196,266.36
  5. Step 5: Solve for x
    x = 252,196,266.36/18,345.36
  6. Step 6: Final answer
    x = 13,747.14

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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.