Home / 20,230.86-27,918.09-11,278.35

Finding the Fourth Proportional to 20,230.86, 27,918.09 and 11,278.35

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Solution

The fourth proportional to 20,230.86, 27,918.09 and 11,278.35 is: 15,563.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.86 : 27,918.09 = 11,278.35 : x
  2. Step 2: Convert to fraction form
    20,230.86/27,918.09 = 11,278.35/x
  3. Step 3: Cross multiply
    20,230.86x = 27,918.09 × 11,278.35
  4. Step 4: Simplify right side
    20,230.86x = 314,869,990.35
  5. Step 5: Solve for x
    x = 314,869,990.35/20,230.86
  6. Step 6: Final answer
    x = 15,563.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.