Home / 18,631.92-27,923.10-13,678.32

Finding the Fourth Proportional to 18,631.92, 27,923.10 and 13,678.32

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Solution

The fourth proportional to 18,631.92, 27,923.10 and 13,678.32 is: 20,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.92 : 27,923.10 = 13,678.32 : x
  2. Step 2: Convert to fraction form
    18,631.92/27,923.10 = 13,678.32/x
  3. Step 3: Cross multiply
    18,631.92x = 27,923.10 × 13,678.32
  4. Step 4: Simplify right side
    18,631.92x = 381,941,097.19
  5. Step 5: Solve for x
    x = 381,941,097.19/18,631.92
  6. Step 6: Final answer
    x = 20,499.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.