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Finding the Fourth Proportional to 11,393.75, 15,723.98 and 6,679.55

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Solution

The fourth proportional to 11,393.75, 15,723.98 and 6,679.55 is: 9,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.75 : 15,723.98 = 6,679.55 : x
  2. Step 2: Convert to fraction form
    11,393.75/15,723.98 = 6,679.55/x
  3. Step 3: Cross multiply
    11,393.75x = 15,723.98 × 6,679.55
  4. Step 4: Simplify right side
    11,393.75x = 105,029,110.61
  5. Step 5: Solve for x
    x = 105,029,110.61/11,393.75
  6. Step 6: Final answer
    x = 9,218.13

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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.