Home / 31,612.73-43,607.30-20,278.19

Finding the Fourth Proportional to 31,612.73, 43,607.30 and 20,278.19

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Solution

The fourth proportional to 31,612.73, 43,607.30 and 20,278.19 is: 27,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,612.73 : 43,607.30 = 20,278.19 : x
  2. Step 2: Convert to fraction form
    31,612.73/43,607.30 = 20,278.19/x
  3. Step 3: Cross multiply
    31,612.73x = 43,607.30 × 20,278.19
  4. Step 4: Simplify right side
    31,612.73x = 884,277,122.41
  5. Step 5: Solve for x
    x = 884,277,122.41/31,612.73
  6. Step 6: Final answer
    x = 27,972.19

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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.