Home / 20,143.18-27,797.16-11,190.52

Finding the Fourth Proportional to 20,143.18, 27,797.16 and 11,190.52

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Solution

The fourth proportional to 20,143.18, 27,797.16 and 11,190.52 is: 15,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.18 : 27,797.16 = 11,190.52 : x
  2. Step 2: Convert to fraction form
    20,143.18/27,797.16 = 11,190.52/x
  3. Step 3: Cross multiply
    20,143.18x = 27,797.16 × 11,190.52
  4. Step 4: Simplify right side
    20,143.18x = 311,064,674.92
  5. Step 5: Solve for x
    x = 311,064,674.92/20,143.18
  6. Step 6: Final answer
    x = 15,442.68

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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.