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Finding the Fourth Proportional to 12,695.92, 17,520.36 and 7,394.32

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Solution

The fourth proportional to 12,695.92, 17,520.36 and 7,394.32 is: 10,204.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.92 : 17,520.36 = 7,394.32 : x
  2. Step 2: Convert to fraction form
    12,695.92/17,520.36 = 7,394.32/x
  3. Step 3: Cross multiply
    12,695.92x = 17,520.36 × 7,394.32
  4. Step 4: Simplify right side
    12,695.92x = 129,551,148.36
  5. Step 5: Solve for x
    x = 129,551,148.36/12,695.92
  6. Step 6: Final answer
    x = 10,204.16

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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.