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Finding the Fourth Proportional to 27,285.90, 40,928.86 and 8,565.85

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Solution

The fourth proportional to 27,285.90, 40,928.86 and 8,565.85 is: 12,848.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,285.90 : 40,928.86 = 8,565.85 : x
  2. Step 2: Convert to fraction form
    27,285.90/40,928.86 = 8,565.85/x
  3. Step 3: Cross multiply
    27,285.90x = 40,928.86 × 8,565.85
  4. Step 4: Simplify right side
    27,285.90x = 350,590,537.30
  5. Step 5: Solve for x
    x = 350,590,537.30/27,285.90
  6. Step 6: Final answer
    x = 12,848.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.