Home / 9,721.68-13,415.04-5,529.12

Finding the Fourth Proportional to 9,721.68, 13,415.04 and 5,529.12

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Solution

The fourth proportional to 9,721.68, 13,415.04 and 5,529.12 is: 7,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.68 : 13,415.04 = 5,529.12 : x
  2. Step 2: Convert to fraction form
    9,721.68/13,415.04 = 5,529.12/x
  3. Step 3: Cross multiply
    9,721.68x = 13,415.04 × 5,529.12
  4. Step 4: Simplify right side
    9,721.68x = 74,173,365.96
  5. Step 5: Solve for x
    x = 74,173,365.96/9,721.68
  6. Step 6: Final answer
    x = 7,629.69

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.