Home / 18,911.56-28,334.94-13,354.96

Finding the Fourth Proportional to 18,911.56, 28,334.94 and 13,354.96

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Solution

The fourth proportional to 18,911.56, 28,334.94 and 13,354.96 is: 20,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.56 : 28,334.94 = 13,354.96 : x
  2. Step 2: Convert to fraction form
    18,911.56/28,334.94 = 13,354.96/x
  3. Step 3: Cross multiply
    18,911.56x = 28,334.94 × 13,354.96
  4. Step 4: Simplify right side
    18,911.56x = 378,411,990.30
  5. Step 5: Solve for x
    x = 378,411,990.30/18,911.56
  6. Step 6: Final answer
    x = 20,009.56

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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.