Home / 21,001.68-28,942.44-15,022.97

Finding the Fourth Proportional to 21,001.68, 28,942.44 and 15,022.97

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Solution

The fourth proportional to 21,001.68, 28,942.44 and 15,022.97 is: 20,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.68 : 28,942.44 = 15,022.97 : x
  2. Step 2: Convert to fraction form
    21,001.68/28,942.44 = 15,022.97/x
  3. Step 3: Cross multiply
    21,001.68x = 28,942.44 × 15,022.97
  4. Step 4: Simplify right side
    21,001.68x = 434,801,263.13
  5. Step 5: Solve for x
    x = 434,801,263.13/21,001.68
  6. Step 6: Final answer
    x = 20,703.17

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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.