Home / 30,351.39-41,891.64-19,722.57

Finding the Fourth Proportional to 30,351.39, 41,891.64 and 19,722.57

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Solution

The fourth proportional to 30,351.39, 41,891.64 and 19,722.57 is: 27,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.39 : 41,891.64 = 19,722.57 : x
  2. Step 2: Convert to fraction form
    30,351.39/41,891.64 = 19,722.57/x
  3. Step 3: Cross multiply
    30,351.39x = 41,891.64 × 19,722.57
  4. Step 4: Simplify right side
    30,351.39x = 826,210,802.31
  5. Step 5: Solve for x
    x = 826,210,802.31/30,351.39
  6. Step 6: Final answer
    x = 27,221.51

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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.