Home / 28,213.20-42,330.60-12,619.62

Finding the Fourth Proportional to 28,213.20, 42,330.60 and 12,619.62

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Solution

The fourth proportional to 28,213.20, 42,330.60 and 12,619.62 is: 18,934.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.20 : 42,330.60 = 12,619.62 : x
  2. Step 2: Convert to fraction form
    28,213.20/42,330.60 = 12,619.62/x
  3. Step 3: Cross multiply
    28,213.20x = 42,330.60 × 12,619.62
  4. Step 4: Simplify right side
    28,213.20x = 534,196,086.37
  5. Step 5: Solve for x
    x = 534,196,086.37/28,213.20
  6. Step 6: Final answer
    x = 18,934.26

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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.