Home / 13,283.99-18,340.73-8,255.71

Finding the Fourth Proportional to 13,283.99, 18,340.73 and 8,255.71

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Solution

The fourth proportional to 13,283.99, 18,340.73 and 8,255.71 is: 11,398.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.99 : 18,340.73 = 8,255.71 : x
  2. Step 2: Convert to fraction form
    13,283.99/18,340.73 = 8,255.71/x
  3. Step 3: Cross multiply
    13,283.99x = 18,340.73 × 8,255.71
  4. Step 4: Simplify right side
    13,283.99x = 151,415,706.79
  5. Step 5: Solve for x
    x = 151,415,706.79/13,283.99
  6. Step 6: Final answer
    x = 11,398.36

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Half scale
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Double scale
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Similar ratio
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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.