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Finding the Fourth Proportional to 12,392.18, 17,104.28 and 7,613.28

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Solution

The fourth proportional to 12,392.18, 17,104.28 and 7,613.28 is: 10,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.18 : 17,104.28 = 7,613.28 : x
  2. Step 2: Convert to fraction form
    12,392.18/17,104.28 = 7,613.28/x
  3. Step 3: Cross multiply
    12,392.18x = 17,104.28 × 7,613.28
  4. Step 4: Simplify right side
    12,392.18x = 130,219,672.84
  5. Step 5: Solve for x
    x = 130,219,672.84/12,392.18
  6. Step 6: Final answer
    x = 10,508.21

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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.