Home / 11,838.08-17,757.28-5,686.40

Finding the Fourth Proportional to 11,838.08, 17,757.28 and 5,686.40

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Solution

The fourth proportional to 11,838.08, 17,757.28 and 5,686.40 is: 8,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,838.08 : 17,757.28 = 5,686.40 : x
  2. Step 2: Convert to fraction form
    11,838.08/17,757.28 = 5,686.40/x
  3. Step 3: Cross multiply
    11,838.08x = 17,757.28 × 5,686.40
  4. Step 4: Simplify right side
    11,838.08x = 100,974,996.99
  5. Step 5: Solve for x
    x = 100,974,996.99/11,838.08
  6. Step 6: Final answer
    x = 8,529.68

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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.