Home / 18,639.92-25,719.72-10,680.32

Finding the Fourth Proportional to 18,639.92, 25,719.72 and 10,680.32

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Solution

The fourth proportional to 18,639.92, 25,719.72 and 10,680.32 is: 14,736.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.92 : 25,719.72 = 10,680.32 : x
  2. Step 2: Convert to fraction form
    18,639.92/25,719.72 = 10,680.32/x
  3. Step 3: Cross multiply
    18,639.92x = 25,719.72 × 10,680.32
  4. Step 4: Simplify right side
    18,639.92x = 274,694,839.91
  5. Step 5: Solve for x
    x = 274,694,839.91/18,639.92
  6. Step 6: Final answer
    x = 14,736.91

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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.