Home / 13,254.36-18,283.78-8,147.10

Finding the Fourth Proportional to 13,254.36, 18,283.78 and 8,147.10

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Solution

The fourth proportional to 13,254.36, 18,283.78 and 8,147.10 is: 11,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,254.36 : 18,283.78 = 8,147.10 : x
  2. Step 2: Convert to fraction form
    13,254.36/18,283.78 = 8,147.10/x
  3. Step 3: Cross multiply
    13,254.36x = 18,283.78 × 8,147.10
  4. Step 4: Simplify right side
    13,254.36x = 148,959,784.04
  5. Step 5: Solve for x
    x = 148,959,784.04/13,254.36
  6. Step 6: Final answer
    x = 11,238.55

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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.