Home / 28,042.29-42,063.69-8,320.85

Finding the Fourth Proportional to 28,042.29, 42,063.69 and 8,320.85

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Solution

The fourth proportional to 28,042.29, 42,063.69 and 8,320.85 is: 12,481.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.29 : 42,063.69 = 8,320.85 : x
  2. Step 2: Convert to fraction form
    28,042.29/42,063.69 = 8,320.85/x
  3. Step 3: Cross multiply
    28,042.29x = 42,063.69 × 8,320.85
  4. Step 4: Simplify right side
    28,042.29x = 350,005,633.56
  5. Step 5: Solve for x
    x = 350,005,633.56/28,042.29
  6. Step 6: Final answer
    x = 12,481.35

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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.