Home / 11,478.11-17,215.54-3,685.91

Finding the Fourth Proportional to 11,478.11, 17,215.54 and 3,685.91

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Solution

The fourth proportional to 11,478.11, 17,215.54 and 3,685.91 is: 5,528.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.11 : 17,215.54 = 3,685.91 : x
  2. Step 2: Convert to fraction form
    11,478.11/17,215.54 = 3,685.91/x
  3. Step 3: Cross multiply
    11,478.11x = 17,215.54 × 3,685.91
  4. Step 4: Simplify right side
    11,478.11x = 63,454,835.75
  5. Step 5: Solve for x
    x = 63,454,835.75/11,478.11
  6. Step 6: Final answer
    x = 5,528.34

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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.