Home / 20,270.15-27,941.05-18,640.83

Finding the Fourth Proportional to 20,270.15, 27,941.05 and 18,640.83

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Solution

The fourth proportional to 20,270.15, 27,941.05 and 18,640.83 is: 25,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.15 : 27,941.05 = 18,640.83 : x
  2. Step 2: Convert to fraction form
    20,270.15/27,941.05 = 18,640.83/x
  3. Step 3: Cross multiply
    20,270.15x = 27,941.05 × 18,640.83
  4. Step 4: Simplify right side
    20,270.15x = 520,844,491.15
  5. Step 5: Solve for x
    x = 520,844,491.15/20,270.15
  6. Step 6: Final answer
    x = 25,695.15

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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.