Home / 20,107.24-27,747.90-11,154.76

Finding the Fourth Proportional to 20,107.24, 27,747.90 and 11,154.76

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Solution

The fourth proportional to 20,107.24, 27,747.90 and 11,154.76 is: 15,393.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.24 : 27,747.90 = 11,154.76 : x
  2. Step 2: Convert to fraction form
    20,107.24/27,747.90 = 11,154.76/x
  3. Step 3: Cross multiply
    20,107.24x = 27,747.90 × 11,154.76
  4. Step 4: Simplify right side
    20,107.24x = 309,521,165.00
  5. Step 5: Solve for x
    x = 309,521,165.00/20,107.24
  6. Step 6: Final answer
    x = 15,393.52

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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.