Home / 30,121.24-45,209.81-21,696.43

Finding the Fourth Proportional to 30,121.24, 45,209.81 and 21,696.43

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Solution

The fourth proportional to 30,121.24, 45,209.81 and 21,696.43 is: 32,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.24 : 45,209.81 = 21,696.43 : x
  2. Step 2: Convert to fraction form
    30,121.24/45,209.81 = 21,696.43/x
  3. Step 3: Cross multiply
    30,121.24x = 45,209.81 × 21,696.43
  4. Step 4: Simplify right side
    30,121.24x = 980,891,256.47
  5. Step 5: Solve for x
    x = 980,891,256.47/30,121.24
  6. Step 6: Final answer
    x = 32,564.77

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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.