Home / 18,979.32-28,455.30-11,582.04

Finding the Fourth Proportional to 18,979.32, 28,455.30 and 11,582.04

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Solution

The fourth proportional to 18,979.32, 28,455.30 and 11,582.04 is: 17,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.32 : 28,455.30 = 11,582.04 : x
  2. Step 2: Convert to fraction form
    18,979.32/28,455.30 = 11,582.04/x
  3. Step 3: Cross multiply
    18,979.32x = 28,455.30 × 11,582.04
  4. Step 4: Simplify right side
    18,979.32x = 329,570,422.81
  5. Step 5: Solve for x
    x = 329,570,422.81/18,979.32
  6. Step 6: Final answer
    x = 17,364.71

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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.