Home / 10,865.04-16,299.84-3,939.12

Finding the Fourth Proportional to 10,865.04, 16,299.84 and 3,939.12

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Solution

The fourth proportional to 10,865.04, 16,299.84 and 3,939.12 is: 5,909.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.04 : 16,299.84 = 3,939.12 : x
  2. Step 2: Convert to fraction form
    10,865.04/16,299.84 = 3,939.12/x
  3. Step 3: Cross multiply
    10,865.04x = 16,299.84 × 3,939.12
  4. Step 4: Simplify right side
    10,865.04x = 64,207,025.74
  5. Step 5: Solve for x
    x = 64,207,025.74/10,865.04
  6. Step 6: Final answer
    x = 5,909.51

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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.