Home / 9,721.53-13,415.68-5,529.78

Finding the Fourth Proportional to 9,721.53, 13,415.68 and 5,529.78

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Solution

The fourth proportional to 9,721.53, 13,415.68 and 5,529.78 is: 7,631.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.53 : 13,415.68 = 5,529.78 : x
  2. Step 2: Convert to fraction form
    9,721.53/13,415.68 = 5,529.78/x
  3. Step 3: Cross multiply
    9,721.53x = 13,415.68 × 5,529.78
  4. Step 4: Simplify right side
    9,721.53x = 74,185,664.22
  5. Step 5: Solve for x
    x = 74,185,664.22/9,721.53
  6. Step 6: Final answer
    x = 7,631.07

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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.