Home / 28,119.34-42,179.82-8,398.27

Finding the Fourth Proportional to 28,119.34, 42,179.82 and 8,398.27

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Solution

The fourth proportional to 28,119.34, 42,179.82 and 8,398.27 is: 12,597.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.34 : 42,179.82 = 8,398.27 : x
  2. Step 2: Convert to fraction form
    28,119.34/42,179.82 = 8,398.27/x
  3. Step 3: Cross multiply
    28,119.34x = 42,179.82 × 8,398.27
  4. Step 4: Simplify right side
    28,119.34x = 354,237,516.91
  5. Step 5: Solve for x
    x = 354,237,516.91/28,119.34
  6. Step 6: Final answer
    x = 12,597.65

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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.