Home / 37,781.92-52,135.80-21,867.40

Finding the Fourth Proportional to 37,781.92, 52,135.80 and 21,867.40

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Solution

The fourth proportional to 37,781.92, 52,135.80 and 21,867.40 is: 30,175.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,781.92 : 52,135.80 = 21,867.40 : x
  2. Step 2: Convert to fraction form
    37,781.92/52,135.80 = 21,867.40/x
  3. Step 3: Cross multiply
    37,781.92x = 52,135.80 × 21,867.40
  4. Step 4: Simplify right side
    37,781.92x = 1,140,074,392.92
  5. Step 5: Solve for x
    x = 1,140,074,392.92/37,781.92
  6. Step 6: Final answer
    x = 30,175.13

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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.