Home / 13,243.38-18,276.69-8,759.36

Finding the Fourth Proportional to 13,243.38, 18,276.69 and 8,759.36

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Solution

The fourth proportional to 13,243.38, 18,276.69 and 8,759.36 is: 12,088.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.38 : 18,276.69 = 8,759.36 : x
  2. Step 2: Convert to fraction form
    13,243.38/18,276.69 = 8,759.36/x
  3. Step 3: Cross multiply
    13,243.38x = 18,276.69 × 8,759.36
  4. Step 4: Simplify right side
    13,243.38x = 160,092,015.93
  5. Step 5: Solve for x
    x = 160,092,015.93/13,243.38
  6. Step 6: Final answer
    x = 12,088.46

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Half scale
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Double scale
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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.