Home / 31,847.31-43,848.90-28,894.86

Finding the Fourth Proportional to 31,847.31, 43,848.90 and 28,894.86

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Solution

The fourth proportional to 31,847.31, 43,848.90 and 28,894.86 is: 39,783.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,847.31 : 43,848.90 = 28,894.86 : x
  2. Step 2: Convert to fraction form
    31,847.31/43,848.90 = 28,894.86/x
  3. Step 3: Cross multiply
    31,847.31x = 43,848.90 × 28,894.86
  4. Step 4: Simplify right side
    31,847.31x = 1,267,007,826.65
  5. Step 5: Solve for x
    x = 1,267,007,826.65/31,847.31
  6. Step 6: Final answer
    x = 39,783.83

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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.