Home / 22,278.92-30,743.55-12,719.90

Finding the Fourth Proportional to 22,278.92, 30,743.55 and 12,719.90

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Solution

The fourth proportional to 22,278.92, 30,743.55 and 12,719.90 is: 17,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.92 : 30,743.55 = 12,719.90 : x
  2. Step 2: Convert to fraction form
    22,278.92/30,743.55 = 12,719.90/x
  3. Step 3: Cross multiply
    22,278.92x = 30,743.55 × 12,719.90
  4. Step 4: Simplify right side
    22,278.92x = 391,054,881.65
  5. Step 5: Solve for x
    x = 391,054,881.65/22,278.92
  6. Step 6: Final answer
    x = 17,552.69

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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.