Home / 20,949.34-31,417.92-6,155.50

Finding the Fourth Proportional to 20,949.34, 31,417.92 and 6,155.50

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Solution

The fourth proportional to 20,949.34, 31,417.92 and 6,155.50 is: 9,231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.34 : 31,417.92 = 6,155.50 : x
  2. Step 2: Convert to fraction form
    20,949.34/31,417.92 = 6,155.50/x
  3. Step 3: Cross multiply
    20,949.34x = 31,417.92 × 6,155.50
  4. Step 4: Simplify right side
    20,949.34x = 193,393,006.56
  5. Step 5: Solve for x
    x = 193,393,006.56/20,949.34
  6. Step 6: Final answer
    x = 9,231.46

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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.