Home / 20,961.56-31,448.81-7,269.59

Finding the Fourth Proportional to 20,961.56, 31,448.81 and 7,269.59

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Solution

The fourth proportional to 20,961.56, 31,448.81 and 7,269.59 is: 10,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.56 : 31,448.81 = 7,269.59 : x
  2. Step 2: Convert to fraction form
    20,961.56/31,448.81 = 7,269.59/x
  3. Step 3: Cross multiply
    20,961.56x = 31,448.81 × 7,269.59
  4. Step 4: Simplify right side
    20,961.56x = 228,620,051.48
  5. Step 5: Solve for x
    x = 228,620,051.48/20,961.56
  6. Step 6: Final answer
    x = 10,906.63

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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.