Home / 20,557.13-30,817.19-7,400.25

Finding the Fourth Proportional to 20,557.13, 30,817.19 and 7,400.25

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Solution

The fourth proportional to 20,557.13, 30,817.19 and 7,400.25 is: 11,093.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.13 : 30,817.19 = 7,400.25 : x
  2. Step 2: Convert to fraction form
    20,557.13/30,817.19 = 7,400.25/x
  3. Step 3: Cross multiply
    20,557.13x = 30,817.19 × 7,400.25
  4. Step 4: Simplify right side
    20,557.13x = 228,054,873.30
  5. Step 5: Solve for x
    x = 228,054,873.30/20,557.13
  6. Step 6: Final answer
    x = 11,093.71

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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.