Home / 12,445.44-17,178.08-7,143.04

Finding the Fourth Proportional to 12,445.44, 17,178.08 and 7,143.04

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Solution

The fourth proportional to 12,445.44, 17,178.08 and 7,143.04 is: 9,859.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.44 : 17,178.08 = 7,143.04 : x
  2. Step 2: Convert to fraction form
    12,445.44/17,178.08 = 7,143.04/x
  3. Step 3: Cross multiply
    12,445.44x = 17,178.08 × 7,143.04
  4. Step 4: Simplify right side
    12,445.44x = 122,703,712.56
  5. Step 5: Solve for x
    x = 122,703,712.56/12,445.44
  6. Step 6: Final answer
    x = 9,859.33

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Double scale
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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.