Home / 10,886.20-16,329.30-6,439.30

Finding the Fourth Proportional to 10,886.20, 16,329.30 and 6,439.30

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Solution

The fourth proportional to 10,886.20, 16,329.30 and 6,439.30 is: 9,658.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.20 : 16,329.30 = 6,439.30 : x
  2. Step 2: Convert to fraction form
    10,886.20/16,329.30 = 6,439.30/x
  3. Step 3: Cross multiply
    10,886.20x = 16,329.30 × 6,439.30
  4. Step 4: Simplify right side
    10,886.20x = 105,149,261.49
  5. Step 5: Solve for x
    x = 105,149,261.49/10,886.20
  6. Step 6: Final answer
    x = 9,658.95

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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.