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Finding the Fourth Proportional to 12,763.60, 17,612.52 and 7,174.48

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Solution

The fourth proportional to 12,763.60, 17,612.52 and 7,174.48 is: 9,900.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.60 : 17,612.52 = 7,174.48 : x
  2. Step 2: Convert to fraction form
    12,763.60/17,612.52 = 7,174.48/x
  3. Step 3: Cross multiply
    12,763.60x = 17,612.52 × 7,174.48
  4. Step 4: Simplify right side
    12,763.60x = 126,360,672.49
  5. Step 5: Solve for x
    x = 126,360,672.49/12,763.60
  6. Step 6: Final answer
    x = 9,900.08

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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.