Home / 20,930.15-31,358.32-11,047.66

Finding the Fourth Proportional to 20,930.15, 31,358.32 and 11,047.66

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Solution

The fourth proportional to 20,930.15, 31,358.32 and 11,047.66 is: 16,552.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.15 : 31,358.32 = 11,047.66 : x
  2. Step 2: Convert to fraction form
    20,930.15/31,358.32 = 11,047.66/x
  3. Step 3: Cross multiply
    20,930.15x = 31,358.32 × 11,047.66
  4. Step 4: Simplify right side
    20,930.15x = 346,436,057.53
  5. Step 5: Solve for x
    x = 346,436,057.53/20,930.15
  6. Step 6: Final answer
    x = 16,552.01

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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.