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Finding the Fourth Proportional to 38,445.78, 57,668.48 and 12,150.48

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Solution

The fourth proportional to 38,445.78, 57,668.48 and 12,150.48 is: 18,225.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,445.78 : 57,668.48 = 12,150.48 : x
  2. Step 2: Convert to fraction form
    38,445.78/57,668.48 = 12,150.48/x
  3. Step 3: Cross multiply
    38,445.78x = 57,668.48 × 12,150.48
  4. Step 4: Simplify right side
    38,445.78x = 700,699,712.87
  5. Step 5: Solve for x
    x = 700,699,712.87/38,445.78
  6. Step 6: Final answer
    x = 18,225.66

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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.