Home / 19,940.40-27,519.30-10,989.51

Finding the Fourth Proportional to 19,940.40, 27,519.30 and 10,989.51

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Solution

The fourth proportional to 19,940.40, 27,519.30 and 10,989.51 is: 15,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.40 : 27,519.30 = 10,989.51 : x
  2. Step 2: Convert to fraction form
    19,940.40/27,519.30 = 10,989.51/x
  3. Step 3: Cross multiply
    19,940.40x = 27,519.30 × 10,989.51
  4. Step 4: Simplify right side
    19,940.40x = 302,423,622.54
  5. Step 5: Solve for x
    x = 302,423,622.54/19,940.40
  6. Step 6: Final answer
    x = 15,166.38

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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.