Home / 20,263.42-27,976.36-13,900.68

Finding the Fourth Proportional to 20,263.42, 27,976.36 and 13,900.68

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Solution

The fourth proportional to 20,263.42, 27,976.36 and 13,900.68 is: 19,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,263.42 : 27,976.36 = 13,900.68 : x
  2. Step 2: Convert to fraction form
    20,263.42/27,976.36 = 13,900.68/x
  3. Step 3: Cross multiply
    20,263.42x = 27,976.36 × 13,900.68
  4. Step 4: Simplify right side
    20,263.42x = 388,890,427.92
  5. Step 5: Solve for x
    x = 388,890,427.92/20,263.42
  6. Step 6: Final answer
    x = 19,191.75

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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.