Home / 20,914.86-31,372.10-9,228.08

Finding the Fourth Proportional to 20,914.86, 31,372.10 and 9,228.08

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Solution

The fourth proportional to 20,914.86, 31,372.10 and 9,228.08 is: 13,842.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.86 : 31,372.10 = 9,228.08 : x
  2. Step 2: Convert to fraction form
    20,914.86/31,372.10 = 9,228.08/x
  3. Step 3: Cross multiply
    20,914.86x = 31,372.10 × 9,228.08
  4. Step 4: Simplify right side
    20,914.86x = 289,504,248.57
  5. Step 5: Solve for x
    x = 289,504,248.57/20,914.86
  6. Step 6: Final answer
    x = 13,842.04

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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.