Home / 18,020.72-27,007.32-10,979.12

Finding the Fourth Proportional to 18,020.72, 27,007.32 and 10,979.12

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Solution

The fourth proportional to 18,020.72, 27,007.32 and 10,979.12 is: 16,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,020.72 : 27,007.32 = 10,979.12 : x
  2. Step 2: Convert to fraction form
    18,020.72/27,007.32 = 10,979.12/x
  3. Step 3: Cross multiply
    18,020.72x = 27,007.32 × 10,979.12
  4. Step 4: Simplify right side
    18,020.72x = 296,516,607.16
  5. Step 5: Solve for x
    x = 296,516,607.16/18,020.72
  6. Step 6: Final answer
    x = 16,454.20

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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.