Home / 19,942.26-27,520.18-10,989.77

Finding the Fourth Proportional to 19,942.26, 27,520.18 and 10,989.77

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Solution

The fourth proportional to 19,942.26, 27,520.18 and 10,989.77 is: 15,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.26 : 27,520.18 = 10,989.77 : x
  2. Step 2: Convert to fraction form
    19,942.26/27,520.18 = 10,989.77/x
  3. Step 3: Cross multiply
    19,942.26x = 27,520.18 × 10,989.77
  4. Step 4: Simplify right side
    19,942.26x = 302,440,345.30
  5. Step 5: Solve for x
    x = 302,440,345.30/19,942.26
  6. Step 6: Final answer
    x = 15,165.80

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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.