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Finding the Fourth Proportional to 12,365.85, 18,524.06 and 7,432.80

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Solution

The fourth proportional to 12,365.85, 18,524.06 and 7,432.80 is: 11,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.85 : 18,524.06 = 7,432.80 : x
  2. Step 2: Convert to fraction form
    12,365.85/18,524.06 = 7,432.80/x
  3. Step 3: Cross multiply
    12,365.85x = 18,524.06 × 7,432.80
  4. Step 4: Simplify right side
    12,365.85x = 137,685,633.17
  5. Step 5: Solve for x
    x = 137,685,633.17/12,365.85
  6. Step 6: Final answer
    x = 11,134.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.