Home / 10,287.75-15,431.67-4,131.75

Finding the Fourth Proportional to 10,287.75, 15,431.67 and 4,131.75

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Solution

The fourth proportional to 10,287.75, 15,431.67 and 4,131.75 is: 6,197.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.75 : 15,431.67 = 4,131.75 : x
  2. Step 2: Convert to fraction form
    10,287.75/15,431.67 = 4,131.75/x
  3. Step 3: Cross multiply
    10,287.75x = 15,431.67 × 4,131.75
  4. Step 4: Simplify right side
    10,287.75x = 63,759,802.52
  5. Step 5: Solve for x
    x = 63,759,802.52/10,287.75
  6. Step 6: Final answer
    x = 6,197.64

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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.