Home / 31,641.84-43,680.06-20,327.76

Finding the Fourth Proportional to 31,641.84, 43,680.06 and 20,327.76

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Solution

The fourth proportional to 31,641.84, 43,680.06 and 20,327.76 is: 28,061.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,641.84 : 43,680.06 = 20,327.76 : x
  2. Step 2: Convert to fraction form
    31,641.84/43,680.06 = 20,327.76/x
  3. Step 3: Cross multiply
    31,641.84x = 43,680.06 × 20,327.76
  4. Step 4: Simplify right side
    31,641.84x = 887,917,776.47
  5. Step 5: Solve for x
    x = 887,917,776.47/31,641.84
  6. Step 6: Final answer
    x = 28,061.51

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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.