Home / 15,126.65-20,874.70-8,411.89

Finding the Fourth Proportional to 15,126.65, 20,874.70 and 8,411.89

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Solution

The fourth proportional to 15,126.65, 20,874.70 and 8,411.89 is: 11,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.65 : 20,874.70 = 8,411.89 : x
  2. Step 2: Convert to fraction form
    15,126.65/20,874.70 = 8,411.89/x
  3. Step 3: Cross multiply
    15,126.65x = 20,874.70 × 8,411.89
  4. Step 4: Simplify right side
    15,126.65x = 175,595,680.18
  5. Step 5: Solve for x
    x = 175,595,680.18/15,126.65
  6. Step 6: Final answer
    x = 11,608.37

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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.