Home / 13,283.61-18,340.21-8,255.33

Finding the Fourth Proportional to 13,283.61, 18,340.21 and 8,255.33

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Solution

The fourth proportional to 13,283.61, 18,340.21 and 8,255.33 is: 11,397.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.61 : 18,340.21 = 8,255.33 : x
  2. Step 2: Convert to fraction form
    13,283.61/18,340.21 = 8,255.33/x
  3. Step 3: Cross multiply
    13,283.61x = 18,340.21 × 8,255.33
  4. Step 4: Simplify right side
    13,283.61x = 151,404,529.94
  5. Step 5: Solve for x
    x = 151,404,529.94/13,283.61
  6. Step 6: Final answer
    x = 11,397.84

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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.