Home / 38,239-52,778.25-21,249.07

Finding the Fourth Proportional to 38,239, 52,778.25 and 21,249.07

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Solution

The fourth proportional to 38,239, 52,778.25 and 21,249.07 is: 29,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,239 : 52,778.25 = 21,249.07 : x
  2. Step 2: Convert to fraction form
    38,239/52,778.25 = 21,249.07/x
  3. Step 3: Cross multiply
    38,239x = 52,778.25 × 21,249.07
  4. Step 4: Simplify right side
    38,239x = 1,121,488,728.73
  5. Step 5: Solve for x
    x = 1,121,488,728.73/38,239
  6. Step 6: Final answer
    x = 29,328.40

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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.