Home / 31,335.97-43,219.20-19,405.93

Finding the Fourth Proportional to 31,335.97, 43,219.20 and 19,405.93

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Solution

The fourth proportional to 31,335.97, 43,219.20 and 19,405.93 is: 26,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,335.97 : 43,219.20 = 19,405.93 : x
  2. Step 2: Convert to fraction form
    31,335.97/43,219.20 = 19,405.93/x
  3. Step 3: Cross multiply
    31,335.97x = 43,219.20 × 19,405.93
  4. Step 4: Simplify right side
    31,335.97x = 838,708,769.86
  5. Step 5: Solve for x
    x = 838,708,769.86/31,335.97
  6. Step 6: Final answer
    x = 26,765.05

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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.