Home / 12,876.72-19,315.92-5,084.88

Finding the Fourth Proportional to 12,876.72, 19,315.92 and 5,084.88

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Solution

The fourth proportional to 12,876.72, 19,315.92 and 5,084.88 is: 7,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.72 : 19,315.92 = 5,084.88 : x
  2. Step 2: Convert to fraction form
    12,876.72/19,315.92 = 5,084.88/x
  3. Step 3: Cross multiply
    12,876.72x = 19,315.92 × 5,084.88
  4. Step 4: Simplify right side
    12,876.72x = 98,219,135.29
  5. Step 5: Solve for x
    x = 98,219,135.29/12,876.72
  6. Step 6: Final answer
    x = 7,627.65

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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.