Home / 12,680.70-19,024.17-8,939.79

Finding the Fourth Proportional to 12,680.70, 19,024.17 and 8,939.79

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Solution

The fourth proportional to 12,680.70, 19,024.17 and 8,939.79 is: 13,411.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.70 : 19,024.17 = 8,939.79 : x
  2. Step 2: Convert to fraction form
    12,680.70/19,024.17 = 8,939.79/x
  3. Step 3: Cross multiply
    12,680.70x = 19,024.17 × 8,939.79
  4. Step 4: Simplify right side
    12,680.70x = 170,072,084.72
  5. Step 5: Solve for x
    x = 170,072,084.72/12,680.70
  6. Step 6: Final answer
    x = 13,411.88

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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.