Home / 28,679.40-43,019.82-13,885.56

Finding the Fourth Proportional to 28,679.40, 43,019.82 and 13,885.56

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Solution

The fourth proportional to 28,679.40, 43,019.82 and 13,885.56 is: 20,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.40 : 43,019.82 = 13,885.56 : x
  2. Step 2: Convert to fraction form
    28,679.40/43,019.82 = 13,885.56/x
  3. Step 3: Cross multiply
    28,679.40x = 43,019.82 × 13,885.56
  4. Step 4: Simplify right side
    28,679.40x = 597,354,291.80
  5. Step 5: Solve for x
    x = 597,354,291.80/28,679.40
  6. Step 6: Final answer
    x = 20,828.69

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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.