Home / 8,921.55-13,388.85-4,542.69

Finding the Fourth Proportional to 8,921.55, 13,388.85 and 4,542.69

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Solution

The fourth proportional to 8,921.55, 13,388.85 and 4,542.69 is: 6,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.55 : 13,388.85 = 4,542.69 : x
  2. Step 2: Convert to fraction form
    8,921.55/13,388.85 = 4,542.69/x
  3. Step 3: Cross multiply
    8,921.55x = 13,388.85 × 4,542.69
  4. Step 4: Simplify right side
    8,921.55x = 60,821,395.01
  5. Step 5: Solve for x
    x = 60,821,395.01/8,921.55
  6. Step 6: Final answer
    x = 6,817.36

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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.