Home / 20,278.50-27,984.27-11,326.01

Finding the Fourth Proportional to 20,278.50, 27,984.27 and 11,326.01

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Solution

The fourth proportional to 20,278.50, 27,984.27 and 11,326.01 is: 15,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.50 : 27,984.27 = 11,326.01 : x
  2. Step 2: Convert to fraction form
    20,278.50/27,984.27 = 11,326.01/x
  3. Step 3: Cross multiply
    20,278.50x = 27,984.27 × 11,326.01
  4. Step 4: Simplify right side
    20,278.50x = 316,949,939.47
  5. Step 5: Solve for x
    x = 316,949,939.47/20,278.50
  6. Step 6: Final answer
    x = 15,629.85

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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.