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Finding the Fourth Proportional to 12,147.64, 16,765.56 and 7,434.64

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Solution

The fourth proportional to 12,147.64, 16,765.56 and 7,434.64 is: 10,260.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.64 : 16,765.56 = 7,434.64 : x
  2. Step 2: Convert to fraction form
    12,147.64/16,765.56 = 7,434.64/x
  3. Step 3: Cross multiply
    12,147.64x = 16,765.56 × 7,434.64
  4. Step 4: Simplify right side
    12,147.64x = 124,645,903.00
  5. Step 5: Solve for x
    x = 124,645,903.00/12,147.64
  6. Step 6: Final answer
    x = 10,260.92

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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.