Home / 20,860.57-31,302.24-8,850.87

Finding the Fourth Proportional to 20,860.57, 31,302.24 and 8,850.87

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Solution

The fourth proportional to 20,860.57, 31,302.24 and 8,850.87 is: 13,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.57 : 31,302.24 = 8,850.87 : x
  2. Step 2: Convert to fraction form
    20,860.57/31,302.24 = 8,850.87/x
  3. Step 3: Cross multiply
    20,860.57x = 31,302.24 × 8,850.87
  4. Step 4: Simplify right side
    20,860.57x = 277,052,090.14
  5. Step 5: Solve for x
    x = 277,052,090.14/20,860.57
  6. Step 6: Final answer
    x = 13,281.14

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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.