Home / 20,230.14-27,934.77-12,689.10

Finding the Fourth Proportional to 20,230.14, 27,934.77 and 12,689.10

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Solution

The fourth proportional to 20,230.14, 27,934.77 and 12,689.10 is: 17,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.14 : 27,934.77 = 12,689.10 : x
  2. Step 2: Convert to fraction form
    20,230.14/27,934.77 = 12,689.10/x
  3. Step 3: Cross multiply
    20,230.14x = 27,934.77 × 12,689.10
  4. Step 4: Simplify right side
    20,230.14x = 354,467,090.01
  5. Step 5: Solve for x
    x = 354,467,090.01/20,230.14
  6. Step 6: Final answer
    x = 17,521.73

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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.