Home / 28,570.28-42,883.11-13,789.58

Finding the Fourth Proportional to 28,570.28, 42,883.11 and 13,789.58

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Solution

The fourth proportional to 28,570.28, 42,883.11 and 13,789.58 is: 20,697.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.28 : 42,883.11 = 13,789.58 : x
  2. Step 2: Convert to fraction form
    28,570.28/42,883.11 = 13,789.58/x
  3. Step 3: Cross multiply
    28,570.28x = 42,883.11 × 13,789.58
  4. Step 4: Simplify right side
    28,570.28x = 591,339,861.58
  5. Step 5: Solve for x
    x = 591,339,861.58/28,570.28
  6. Step 6: Final answer
    x = 20,697.73

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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.