Home / 22,375.65-30,878.55-12,303.75

Finding the Fourth Proportional to 22,375.65, 30,878.55 and 12,303.75

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Solution

The fourth proportional to 22,375.65, 30,878.55 and 12,303.75 is: 16,979.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,375.65 : 30,878.55 = 12,303.75 : x
  2. Step 2: Convert to fraction form
    22,375.65/30,878.55 = 12,303.75/x
  3. Step 3: Cross multiply
    22,375.65x = 30,878.55 × 12,303.75
  4. Step 4: Simplify right side
    22,375.65x = 379,921,959.56
  5. Step 5: Solve for x
    x = 379,921,959.56/22,375.65
  6. Step 6: Final answer
    x = 16,979.26

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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.