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Finding the Fourth Proportional to 19,959.20, 29,933.12 and 5,920.28

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Solution

The fourth proportional to 19,959.20, 29,933.12 and 5,920.28 is: 8,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.20 : 29,933.12 = 5,920.28 : x
  2. Step 2: Convert to fraction form
    19,959.20/29,933.12 = 5,920.28/x
  3. Step 3: Cross multiply
    19,959.20x = 29,933.12 × 5,920.28
  4. Step 4: Simplify right side
    19,959.20x = 177,212,316.81
  5. Step 5: Solve for x
    x = 177,212,316.81/19,959.20
  6. Step 6: Final answer
    x = 8,878.73

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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.