Home / 31,394.19-43,335.35-20,787.24

Finding the Fourth Proportional to 31,394.19, 43,335.35 and 20,787.24

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Solution

The fourth proportional to 31,394.19, 43,335.35 and 20,787.24 is: 28,693.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,394.19 : 43,335.35 = 20,787.24 : x
  2. Step 2: Convert to fraction form
    31,394.19/43,335.35 = 20,787.24/x
  3. Step 3: Cross multiply
    31,394.19x = 43,335.35 × 20,787.24
  4. Step 4: Simplify right side
    31,394.19x = 900,822,320.93
  5. Step 5: Solve for x
    x = 900,822,320.93/31,394.19
  6. Step 6: Final answer
    x = 28,693.92

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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.