Home / 10,613.75-15,920.63-3,317.75

Finding the Fourth Proportional to 10,613.75, 15,920.63 and 3,317.75

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Solution

The fourth proportional to 10,613.75, 15,920.63 and 3,317.75 is: 4,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,613.75 : 15,920.63 = 3,317.75 : x
  2. Step 2: Convert to fraction form
    10,613.75/15,920.63 = 3,317.75/x
  3. Step 3: Cross multiply
    10,613.75x = 15,920.63 × 3,317.75
  4. Step 4: Simplify right side
    10,613.75x = 52,820,670.18
  5. Step 5: Solve for x
    x = 52,820,670.18/10,613.75
  6. Step 6: Final answer
    x = 4,976.63

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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.