Home / 10,615.91-15,917.76-4,380.21

Finding the Fourth Proportional to 10,615.91, 15,917.76 and 4,380.21

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Solution

The fourth proportional to 10,615.91, 15,917.76 and 4,380.21 is: 6,567.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.91 : 15,917.76 = 4,380.21 : x
  2. Step 2: Convert to fraction form
    10,615.91/15,917.76 = 4,380.21/x
  3. Step 3: Cross multiply
    10,615.91x = 15,917.76 × 4,380.21
  4. Step 4: Simplify right side
    10,615.91x = 69,723,131.53
  5. Step 5: Solve for x
    x = 69,723,131.53/10,615.91
  6. Step 6: Final answer
    x = 6,567.80

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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.