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Finding the Fourth Proportional to 38,444.40, 57,668.40 and 12,151.20

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Solution

The fourth proportional to 38,444.40, 57,668.40 and 12,151.20 is: 18,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,444.40 : 57,668.40 = 12,151.20 : x
  2. Step 2: Convert to fraction form
    38,444.40/57,668.40 = 12,151.20/x
  3. Step 3: Cross multiply
    38,444.40x = 57,668.40 × 12,151.20
  4. Step 4: Simplify right side
    38,444.40x = 700,740,262.08
  5. Step 5: Solve for x
    x = 700,740,262.08/38,444.40
  6. Step 6: Final answer
    x = 18,227.37

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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.