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Finding the Fourth Proportional to 12,659.28, 17,468.64 and 7,935.36

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Solution

The fourth proportional to 12,659.28, 17,468.64 and 7,935.36 is: 10,950.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.28 : 17,468.64 = 7,935.36 : x
  2. Step 2: Convert to fraction form
    12,659.28/17,468.64 = 7,935.36/x
  3. Step 3: Cross multiply
    12,659.28x = 17,468.64 × 7,935.36
  4. Step 4: Simplify right side
    12,659.28x = 138,619,947.11
  5. Step 5: Solve for x
    x = 138,619,947.11/12,659.28
  6. Step 6: Final answer
    x = 10,950.07

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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.