Home / 19,942.68-27,520.53-10,990.20

Finding the Fourth Proportional to 19,942.68, 27,520.53 and 10,990.20

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Solution

The fourth proportional to 19,942.68, 27,520.53 and 10,990.20 is: 15,166.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.68 : 27,520.53 = 10,990.20 : x
  2. Step 2: Convert to fraction form
    19,942.68/27,520.53 = 10,990.20/x
  3. Step 3: Cross multiply
    19,942.68x = 27,520.53 × 10,990.20
  4. Step 4: Simplify right side
    19,942.68x = 302,456,128.81
  5. Step 5: Solve for x
    x = 302,456,128.81/19,942.68
  6. Step 6: Final answer
    x = 15,166.27

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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.