Home / 20,538.28-28,342.83-11,106.84

Finding the Fourth Proportional to 20,538.28, 28,342.83 and 11,106.84

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Solution

The fourth proportional to 20,538.28, 28,342.83 and 11,106.84 is: 15,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.28 : 28,342.83 = 11,106.84 : x
  2. Step 2: Convert to fraction form
    20,538.28/28,342.83 = 11,106.84/x
  3. Step 3: Cross multiply
    20,538.28x = 28,342.83 × 11,106.84
  4. Step 4: Simplify right side
    20,538.28x = 314,799,277.96
  5. Step 5: Solve for x
    x = 314,799,277.96/20,538.28
  6. Step 6: Final answer
    x = 15,327.44

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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.