Home / 19,942.09-27,521.31-10,989.60

Finding the Fourth Proportional to 19,942.09, 27,521.31 and 10,989.60

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Solution

The fourth proportional to 19,942.09, 27,521.31 and 10,989.60 is: 15,166.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.09 : 27,521.31 = 10,989.60 : x
  2. Step 2: Convert to fraction form
    19,942.09/27,521.31 = 10,989.60/x
  3. Step 3: Cross multiply
    19,942.09x = 27,521.31 × 10,989.60
  4. Step 4: Simplify right side
    19,942.09x = 302,448,188.38
  5. Step 5: Solve for x
    x = 302,448,188.38/19,942.09
  6. Step 6: Final answer
    x = 15,166.32

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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.