Home / 28,508.96-42,716.68-20,148.14

Finding the Fourth Proportional to 28,508.96, 42,716.68 and 20,148.14

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Solution

The fourth proportional to 28,508.96, 42,716.68 and 20,148.14 is: 30,189.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.96 : 42,716.68 = 20,148.14 : x
  2. Step 2: Convert to fraction form
    28,508.96/42,716.68 = 20,148.14/x
  3. Step 3: Cross multiply
    28,508.96x = 42,716.68 × 20,148.14
  4. Step 4: Simplify right side
    28,508.96x = 860,661,648.98
  5. Step 5: Solve for x
    x = 860,661,648.98/28,508.96
  6. Step 6: Final answer
    x = 30,189.16

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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.