Home / 11,439.88-15,782.40-6,960.04

Finding the Fourth Proportional to 11,439.88, 15,782.40 and 6,960.04

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Solution

The fourth proportional to 11,439.88, 15,782.40 and 6,960.04 is: 9,602.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.88 : 15,782.40 = 6,960.04 : x
  2. Step 2: Convert to fraction form
    11,439.88/15,782.40 = 6,960.04/x
  3. Step 3: Cross multiply
    11,439.88x = 15,782.40 × 6,960.04
  4. Step 4: Simplify right side
    11,439.88x = 109,846,135.30
  5. Step 5: Solve for x
    x = 109,846,135.30/11,439.88
  6. Step 6: Final answer
    x = 9,602.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.