Home / 11,252.76-15,521.94-7,890.72

Finding the Fourth Proportional to 11,252.76, 15,521.94 and 7,890.72

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Solution

The fourth proportional to 11,252.76, 15,521.94 and 7,890.72 is: 10,884.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,252.76 : 15,521.94 = 7,890.72 : x
  2. Step 2: Convert to fraction form
    11,252.76/15,521.94 = 7,890.72/x
  3. Step 3: Cross multiply
    11,252.76x = 15,521.94 × 7,890.72
  4. Step 4: Simplify right side
    11,252.76x = 122,479,282.40
  5. Step 5: Solve for x
    x = 122,479,282.40/11,252.76
  6. Step 6: Final answer
    x = 10,884.38

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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.