Home / 20,340.09-28,067.94-11,387.52

Finding the Fourth Proportional to 20,340.09, 28,067.94 and 11,387.52

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Solution

The fourth proportional to 20,340.09, 28,067.94 and 11,387.52 is: 15,714.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.09 : 28,067.94 = 11,387.52 : x
  2. Step 2: Convert to fraction form
    20,340.09/28,067.94 = 11,387.52/x
  3. Step 3: Cross multiply
    20,340.09x = 28,067.94 × 11,387.52
  4. Step 4: Simplify right side
    20,340.09x = 319,624,228.11
  5. Step 5: Solve for x
    x = 319,624,228.11/20,340.09
  6. Step 6: Final answer
    x = 15,714.00

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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.