Home / 20,145.47-30,216.12-5,355.87

Finding the Fourth Proportional to 20,145.47, 30,216.12 and 5,355.87

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Solution

The fourth proportional to 20,145.47, 30,216.12 and 5,355.87 is: 8,033.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.47 : 30,216.12 = 5,355.87 : x
  2. Step 2: Convert to fraction form
    20,145.47/30,216.12 = 5,355.87/x
  3. Step 3: Cross multiply
    20,145.47x = 30,216.12 × 5,355.87
  4. Step 4: Simplify right side
    20,145.47x = 161,833,610.62
  5. Step 5: Solve for x
    x = 161,833,610.62/20,145.47
  6. Step 6: Final answer
    x = 8,033.25

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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.