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Finding the Fourth Proportional to 10,860, 16,290.18 and 4,286.13

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Solution

The fourth proportional to 10,860, 16,290.18 and 4,286.13 is: 6,429.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860 : 16,290.18 = 4,286.13 : x
  2. Step 2: Convert to fraction form
    10,860/16,290.18 = 4,286.13/x
  3. Step 3: Cross multiply
    10,860x = 16,290.18 × 4,286.13
  4. Step 4: Simplify right side
    10,860x = 69,821,829.20
  5. Step 5: Solve for x
    x = 69,821,829.20/10,860
  6. Step 6: Final answer
    x = 6,429.27

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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.