Home / 20,275.48-27,977.40-11,321.84

Finding the Fourth Proportional to 20,275.48, 27,977.40 and 11,321.84

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Solution

The fourth proportional to 20,275.48, 27,977.40 and 11,321.84 is: 15,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.48 : 27,977.40 = 11,321.84 : x
  2. Step 2: Convert to fraction form
    20,275.48/27,977.40 = 11,321.84/x
  3. Step 3: Cross multiply
    20,275.48x = 27,977.40 × 11,321.84
  4. Step 4: Simplify right side
    20,275.48x = 316,755,716.36
  5. Step 5: Solve for x
    x = 316,755,716.36/20,275.48
  6. Step 6: Final answer
    x = 15,622.60

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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.