Home / 11,985.92-17,890.12-11,247.20

Finding the Fourth Proportional to 11,985.92, 17,890.12 and 11,247.20

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Solution

The fourth proportional to 11,985.92, 17,890.12 and 11,247.20 is: 16,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.92 : 17,890.12 = 11,247.20 : x
  2. Step 2: Convert to fraction form
    11,985.92/17,890.12 = 11,247.20/x
  3. Step 3: Cross multiply
    11,985.92x = 17,890.12 × 11,247.20
  4. Step 4: Simplify right side
    11,985.92x = 201,213,757.66
  5. Step 5: Solve for x
    x = 201,213,757.66/11,985.92
  6. Step 6: Final answer
    x = 16,787.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.