Home / 11,310.42-15,622-9,890.48

Finding the Fourth Proportional to 11,310.42, 15,622 and 9,890.48

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Solution

The fourth proportional to 11,310.42, 15,622 and 9,890.48 is: 13,660.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.42 : 15,622 = 9,890.48 : x
  2. Step 2: Convert to fraction form
    11,310.42/15,622 = 9,890.48/x
  3. Step 3: Cross multiply
    11,310.42x = 15,622 × 9,890.48
  4. Step 4: Simplify right side
    11,310.42x = 154,509,078.56
  5. Step 5: Solve for x
    x = 154,509,078.56/11,310.42
  6. Step 6: Final answer
    x = 13,660.77

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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.