Home / 22,279.87-30,725.66-15,120.17

Finding the Fourth Proportional to 22,279.87, 30,725.66 and 15,120.17

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Solution

The fourth proportional to 22,279.87, 30,725.66 and 15,120.17 is: 20,851.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,279.87 : 30,725.66 = 15,120.17 : x
  2. Step 2: Convert to fraction form
    22,279.87/30,725.66 = 15,120.17/x
  3. Step 3: Cross multiply
    22,279.87x = 30,725.66 × 15,120.17
  4. Step 4: Simplify right side
    22,279.87x = 464,577,374.79
  5. Step 5: Solve for x
    x = 464,577,374.79/22,279.87
  6. Step 6: Final answer
    x = 20,851.89

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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.