Home / 11,440.40-15,789.80-6,724.92

Finding the Fourth Proportional to 11,440.40, 15,789.80 and 6,724.92

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Solution

The fourth proportional to 11,440.40, 15,789.80 and 6,724.92 is: 9,281.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.40 : 15,789.80 = 6,724.92 : x
  2. Step 2: Convert to fraction form
    11,440.40/15,789.80 = 6,724.92/x
  3. Step 3: Cross multiply
    11,440.40x = 15,789.80 × 6,724.92
  4. Step 4: Simplify right side
    11,440.40x = 106,185,141.82
  5. Step 5: Solve for x
    x = 106,185,141.82/11,440.40
  6. Step 6: Final answer
    x = 9,281.59

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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.