Home / 10,215.75-15,323.63-3,290.25

Finding the Fourth Proportional to 10,215.75, 15,323.63 and 3,290.25

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Solution

The fourth proportional to 10,215.75, 15,323.63 and 3,290.25 is: 4,935.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.75 : 15,323.63 = 3,290.25 : x
  2. Step 2: Convert to fraction form
    10,215.75/15,323.63 = 3,290.25/x
  3. Step 3: Cross multiply
    10,215.75x = 15,323.63 × 3,290.25
  4. Step 4: Simplify right side
    10,215.75x = 50,418,557.16
  5. Step 5: Solve for x
    x = 50,418,557.16/10,215.75
  6. Step 6: Final answer
    x = 4,935.38

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Double scale
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Similar ratio
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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.