Home / 20,356.07-28,091.88-11,281.23

Finding the Fourth Proportional to 20,356.07, 28,091.88 and 11,281.23

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Solution

The fourth proportional to 20,356.07, 28,091.88 and 11,281.23 is: 15,568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.07 : 28,091.88 = 11,281.23 : x
  2. Step 2: Convert to fraction form
    20,356.07/28,091.88 = 11,281.23/x
  3. Step 3: Cross multiply
    20,356.07x = 28,091.88 × 11,281.23
  4. Step 4: Simplify right side
    20,356.07x = 316,910,959.41
  5. Step 5: Solve for x
    x = 316,910,959.41/20,356.07
  6. Step 6: Final answer
    x = 15,568.38

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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.