Home / 28,679.28-43,019.66-13,885.44

Finding the Fourth Proportional to 28,679.28, 43,019.66 and 13,885.44

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Solution

The fourth proportional to 28,679.28, 43,019.66 and 13,885.44 is: 20,828.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.28 : 43,019.66 = 13,885.44 : x
  2. Step 2: Convert to fraction form
    28,679.28/43,019.66 = 13,885.44/x
  3. Step 3: Cross multiply
    28,679.28x = 43,019.66 × 13,885.44
  4. Step 4: Simplify right side
    28,679.28x = 597,346,907.75
  5. Step 5: Solve for x
    x = 597,346,907.75/28,679.28
  6. Step 6: Final answer
    x = 20,828.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.