Home / 10,684.71-15,986.97-8,836.70

Finding the Fourth Proportional to 10,684.71, 15,986.97 and 8,836.70

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Solution

The fourth proportional to 10,684.71, 15,986.97 and 8,836.70 is: 13,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,684.71 : 15,986.97 = 8,836.70 : x
  2. Step 2: Convert to fraction form
    10,684.71/15,986.97 = 8,836.70/x
  3. Step 3: Cross multiply
    10,684.71x = 15,986.97 × 8,836.70
  4. Step 4: Simplify right side
    10,684.71x = 141,271,977.86
  5. Step 5: Solve for x
    x = 141,271,977.86/10,684.71
  6. Step 6: Final answer
    x = 13,221.88

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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.