Home / 10,721.28-14,796.16-7,185.92

Finding the Fourth Proportional to 10,721.28, 14,796.16 and 7,185.92

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Solution

The fourth proportional to 10,721.28, 14,796.16 and 7,185.92 is: 9,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.28 : 14,796.16 = 7,185.92 : x
  2. Step 2: Convert to fraction form
    10,721.28/14,796.16 = 7,185.92/x
  3. Step 3: Cross multiply
    10,721.28x = 14,796.16 × 7,185.92
  4. Step 4: Simplify right side
    10,721.28x = 106,324,022.07
  5. Step 5: Solve for x
    x = 106,324,022.07/10,721.28
  6. Step 6: Final answer
    x = 9,917.10

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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.