Home / 10,530.21-15,781.61-4,282.94

Finding the Fourth Proportional to 10,530.21, 15,781.61 and 4,282.94

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Solution

The fourth proportional to 10,530.21, 15,781.61 and 4,282.94 is: 6,418.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,530.21 : 15,781.61 = 4,282.94 : x
  2. Step 2: Convert to fraction form
    10,530.21/15,781.61 = 4,282.94/x
  3. Step 3: Cross multiply
    10,530.21x = 15,781.61 × 4,282.94
  4. Step 4: Simplify right side
    10,530.21x = 67,591,688.73
  5. Step 5: Solve for x
    x = 67,591,688.73/10,530.21
  6. Step 6: Final answer
    x = 6,418.84

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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.