Home / 20,230.86-30,355.92-9,140.94

Finding the Fourth Proportional to 20,230.86, 30,355.92 and 9,140.94

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Solution

The fourth proportional to 20,230.86, 30,355.92 and 9,140.94 is: 13,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.86 : 30,355.92 = 9,140.94 : x
  2. Step 2: Convert to fraction form
    20,230.86/30,355.92 = 9,140.94/x
  3. Step 3: Cross multiply
    20,230.86x = 30,355.92 × 9,140.94
  4. Step 4: Simplify right side
    20,230.86x = 277,481,643.36
  5. Step 5: Solve for x
    x = 277,481,643.36/20,230.86
  6. Step 6: Final answer
    x = 13,715.76

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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.