Home / 13,240.76-18,255.65-9,697.82

Finding the Fourth Proportional to 13,240.76, 18,255.65 and 9,697.82

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Solution

The fourth proportional to 13,240.76, 18,255.65 and 9,697.82 is: 13,370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.76 : 18,255.65 = 9,697.82 : x
  2. Step 2: Convert to fraction form
    13,240.76/18,255.65 = 9,697.82/x
  3. Step 3: Cross multiply
    13,240.76x = 18,255.65 × 9,697.82
  4. Step 4: Simplify right side
    13,240.76x = 177,039,867.92
  5. Step 5: Solve for x
    x = 177,039,867.92/13,240.76
  6. Step 6: Final answer
    x = 13,370.83

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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.