Home / 21,011.27-28,995.17-11,451.24

Finding the Fourth Proportional to 21,011.27, 28,995.17 and 11,451.24

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Solution

The fourth proportional to 21,011.27, 28,995.17 and 11,451.24 is: 15,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.27 : 28,995.17 = 11,451.24 : x
  2. Step 2: Convert to fraction form
    21,011.27/28,995.17 = 11,451.24/x
  3. Step 3: Cross multiply
    21,011.27x = 28,995.17 × 11,451.24
  4. Step 4: Simplify right side
    21,011.27x = 332,030,593.25
  5. Step 5: Solve for x
    x = 332,030,593.25/21,011.27
  6. Step 6: Final answer
    x = 15,802.50

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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.