Home / 20,947.05-31,420.58-6,155.97

Finding the Fourth Proportional to 20,947.05, 31,420.58 and 6,155.97

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Solution

The fourth proportional to 20,947.05, 31,420.58 and 6,155.97 is: 9,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.05 : 31,420.58 = 6,155.97 : x
  2. Step 2: Convert to fraction form
    20,947.05/31,420.58 = 6,155.97/x
  3. Step 3: Cross multiply
    20,947.05x = 31,420.58 × 6,155.97
  4. Step 4: Simplify right side
    20,947.05x = 193,423,975.37
  5. Step 5: Solve for x
    x = 193,423,975.37/20,947.05
  6. Step 6: Final answer
    x = 9,233.95

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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.