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Finding the Fourth Proportional to 38,149.60, 57,208.20 and 18,434.20

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Solution

The fourth proportional to 38,149.60, 57,208.20 and 18,434.20 is: 27,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,149.60 : 57,208.20 = 18,434.20 : x
  2. Step 2: Convert to fraction form
    38,149.60/57,208.20 = 18,434.20/x
  3. Step 3: Cross multiply
    38,149.60x = 57,208.20 × 18,434.20
  4. Step 4: Simplify right side
    38,149.60x = 1,054,587,400.44
  5. Step 5: Solve for x
    x = 1,054,587,400.44/38,149.60
  6. Step 6: Final answer
    x = 27,643.47

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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.