Home / 18,639.81-25,714.46-11,081.85

Finding the Fourth Proportional to 18,639.81, 25,714.46 and 11,081.85

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Solution

The fourth proportional to 18,639.81, 25,714.46 and 11,081.85 is: 15,287.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.81 : 25,714.46 = 11,081.85 : x
  2. Step 2: Convert to fraction form
    18,639.81/25,714.46 = 11,081.85/x
  3. Step 3: Cross multiply
    18,639.81x = 25,714.46 × 11,081.85
  4. Step 4: Simplify right side
    18,639.81x = 284,963,719.83
  5. Step 5: Solve for x
    x = 284,963,719.83/18,639.81
  6. Step 6: Final answer
    x = 15,287.91

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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.