Home / 19,940.92-27,518.80-10,989.36

Finding the Fourth Proportional to 19,940.92, 27,518.80 and 10,989.36

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Solution

The fourth proportional to 19,940.92, 27,518.80 and 10,989.36 is: 15,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.92 : 27,518.80 = 10,989.36 : x
  2. Step 2: Convert to fraction form
    19,940.92/27,518.80 = 10,989.36/x
  3. Step 3: Cross multiply
    19,940.92x = 27,518.80 × 10,989.36
  4. Step 4: Simplify right side
    19,940.92x = 302,413,999.97
  5. Step 5: Solve for x
    x = 302,413,999.97/19,940.92
  6. Step 6: Final answer
    x = 15,165.50

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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.