Home / 10,721.28-16,067.52-7,021.92

Finding the Fourth Proportional to 10,721.28, 16,067.52 and 7,021.92

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Solution

The fourth proportional to 10,721.28, 16,067.52 and 7,021.92 is: 10,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.28 : 16,067.52 = 7,021.92 : x
  2. Step 2: Convert to fraction form
    10,721.28/16,067.52 = 7,021.92/x
  3. Step 3: Cross multiply
    10,721.28x = 16,067.52 × 7,021.92
  4. Step 4: Simplify right side
    10,721.28x = 112,824,840.04
  5. Step 5: Solve for x
    x = 112,824,840.04/10,721.28
  6. Step 6: Final answer
    x = 10,523.45

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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.