Home / 20,950.72-31,418.52-6,155.68

Finding the Fourth Proportional to 20,950.72, 31,418.52 and 6,155.68

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Solution

The fourth proportional to 20,950.72, 31,418.52 and 6,155.68 is: 9,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.72 : 31,418.52 = 6,155.68 : x
  2. Step 2: Convert to fraction form
    20,950.72/31,418.52 = 6,155.68/x
  3. Step 3: Cross multiply
    20,950.72x = 31,418.52 × 6,155.68
  4. Step 4: Simplify right side
    20,950.72x = 193,402,355.19
  5. Step 5: Solve for x
    x = 193,402,355.19/20,950.72
  6. Step 6: Final answer
    x = 9,231.30

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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.