Home / 15,226.20-21,013.06-8,939.56

Finding the Fourth Proportional to 15,226.20, 21,013.06 and 8,939.56

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Solution

The fourth proportional to 15,226.20, 21,013.06 and 8,939.56 is: 12,337.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.20 : 21,013.06 = 8,939.56 : x
  2. Step 2: Convert to fraction form
    15,226.20/21,013.06 = 8,939.56/x
  3. Step 3: Cross multiply
    15,226.20x = 21,013.06 × 8,939.56
  4. Step 4: Simplify right side
    15,226.20x = 187,847,510.65
  5. Step 5: Solve for x
    x = 187,847,510.65/15,226.20
  6. Step 6: Final answer
    x = 12,337.12

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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.