Home / 31,781.84-43,876.56-28,416.56

Finding the Fourth Proportional to 31,781.84, 43,876.56 and 28,416.56

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Solution

The fourth proportional to 31,781.84, 43,876.56 and 28,416.56 is: 39,230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.84 : 43,876.56 = 28,416.56 : x
  2. Step 2: Convert to fraction form
    31,781.84/43,876.56 = 28,416.56/x
  3. Step 3: Cross multiply
    31,781.84x = 43,876.56 × 28,416.56
  4. Step 4: Simplify right side
    31,781.84x = 1,246,820,899.83
  5. Step 5: Solve for x
    x = 1,246,820,899.83/31,781.84
  6. Step 6: Final answer
    x = 39,230.61

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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.