Home / 20,443.89-30,665.84-5,451.06

Finding the Fourth Proportional to 20,443.89, 30,665.84 and 5,451.06

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Solution

The fourth proportional to 20,443.89, 30,665.84 and 5,451.06 is: 8,176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.89 : 30,665.84 = 5,451.06 : x
  2. Step 2: Convert to fraction form
    20,443.89/30,665.84 = 5,451.06/x
  3. Step 3: Cross multiply
    20,443.89x = 30,665.84 × 5,451.06
  4. Step 4: Simplify right side
    20,443.89x = 167,161,335.92
  5. Step 5: Solve for x
    x = 167,161,335.92/20,443.89
  6. Step 6: Final answer
    x = 8,176.59

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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.