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Finding the Fourth Proportional to 12,648.80, 17,448.08 and 7,342.94

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Solution

The fourth proportional to 12,648.80, 17,448.08 and 7,342.94 is: 10,129.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.80 : 17,448.08 = 7,342.94 : x
  2. Step 2: Convert to fraction form
    12,648.80/17,448.08 = 7,342.94/x
  3. Step 3: Cross multiply
    12,648.80x = 17,448.08 × 7,342.94
  4. Step 4: Simplify right side
    12,648.80x = 128,120,204.56
  5. Step 5: Solve for x
    x = 128,120,204.56/12,648.80
  6. Step 6: Final answer
    x = 10,129.04

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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.