Home / 10,415.05-15,626.84-5,489.04

Finding the Fourth Proportional to 10,415.05, 15,626.84 and 5,489.04

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Solution

The fourth proportional to 10,415.05, 15,626.84 and 5,489.04 is: 8,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,415.05 : 15,626.84 = 5,489.04 : x
  2. Step 2: Convert to fraction form
    10,415.05/15,626.84 = 5,489.04/x
  3. Step 3: Cross multiply
    10,415.05x = 15,626.84 × 5,489.04
  4. Step 4: Simplify right side
    10,415.05x = 85,776,349.83
  5. Step 5: Solve for x
    x = 85,776,349.83/10,415.05
  6. Step 6: Final answer
    x = 8,235.81

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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.