Home / 28,078.62-42,081.57-11,419.17

Finding the Fourth Proportional to 28,078.62, 42,081.57 and 11,419.17

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Solution

The fourth proportional to 28,078.62, 42,081.57 and 11,419.17 is: 17,113.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.62 : 42,081.57 = 11,419.17 : x
  2. Step 2: Convert to fraction form
    28,078.62/42,081.57 = 11,419.17/x
  3. Step 3: Cross multiply
    28,078.62x = 42,081.57 × 11,419.17
  4. Step 4: Simplify right side
    28,078.62x = 480,536,601.70
  5. Step 5: Solve for x
    x = 480,536,601.70/28,078.62
  6. Step 6: Final answer
    x = 17,113.97

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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.