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Finding the Fourth Proportional to 10,240.70, 15,361.04 and 5,855.08

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Solution

The fourth proportional to 10,240.70, 15,361.04 and 5,855.08 is: 8,782.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,240.70 : 15,361.04 = 5,855.08 : x
  2. Step 2: Convert to fraction form
    10,240.70/15,361.04 = 5,855.08/x
  3. Step 3: Cross multiply
    10,240.70x = 15,361.04 × 5,855.08
  4. Step 4: Simplify right side
    10,240.70x = 89,940,132.72
  5. Step 5: Solve for x
    x = 89,940,132.72/10,240.70
  6. Step 6: Final answer
    x = 8,782.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.