Home / 19,942.42-27,521.74-10,989.90

Finding the Fourth Proportional to 19,942.42, 27,521.74 and 10,989.90

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Solution

The fourth proportional to 19,942.42, 27,521.74 and 10,989.90 is: 15,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.42 : 27,521.74 = 10,989.90 : x
  2. Step 2: Convert to fraction form
    19,942.42/27,521.74 = 10,989.90/x
  3. Step 3: Cross multiply
    19,942.42x = 27,521.74 × 10,989.90
  4. Step 4: Simplify right side
    19,942.42x = 302,461,170.43
  5. Step 5: Solve for x
    x = 302,461,170.43/19,942.42
  6. Step 6: Final answer
    x = 15,166.72

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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.