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Finding the Fourth Proportional to 15,833.76, 21,849.92 and 8,759.72

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Solution

The fourth proportional to 15,833.76, 21,849.92 and 8,759.72 is: 12,088.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,833.76 : 21,849.92 = 8,759.72 : x
  2. Step 2: Convert to fraction form
    15,833.76/21,849.92 = 8,759.72/x
  3. Step 3: Cross multiply
    15,833.76x = 21,849.92 × 8,759.72
  4. Step 4: Simplify right side
    15,833.76x = 191,399,181.22
  5. Step 5: Solve for x
    x = 191,399,181.22/15,833.76
  6. Step 6: Final answer
    x = 12,088.04

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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.