Home / 20,340.04-28,069.26-11,387.56

Finding the Fourth Proportional to 20,340.04, 28,069.26 and 11,387.56

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Solution

The fourth proportional to 20,340.04, 28,069.26 and 11,387.56 is: 15,714.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.04 : 28,069.26 = 11,387.56 : x
  2. Step 2: Convert to fraction form
    20,340.04/28,069.26 = 11,387.56/x
  3. Step 3: Cross multiply
    20,340.04x = 28,069.26 × 11,387.56
  4. Step 4: Simplify right side
    20,340.04x = 319,640,382.41
  5. Step 5: Solve for x
    x = 319,640,382.41/20,340.04
  6. Step 6: Final answer
    x = 15,714.84

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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.