Home / 19,946.58-29,921.54-5,155.78

Finding the Fourth Proportional to 19,946.58, 29,921.54 and 5,155.78

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Solution

The fourth proportional to 19,946.58, 29,921.54 and 5,155.78 is: 7,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,946.58 : 29,921.54 = 5,155.78 : x
  2. Step 2: Convert to fraction form
    19,946.58/29,921.54 = 5,155.78/x
  3. Step 3: Cross multiply
    19,946.58x = 29,921.54 × 5,155.78
  4. Step 4: Simplify right side
    19,946.58x = 154,268,770.62
  5. Step 5: Solve for x
    x = 154,268,770.62/19,946.58
  6. Step 6: Final answer
    x = 7,734.10

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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.