Home / 18,749.15-28,109.80-11,351.85

Finding the Fourth Proportional to 18,749.15, 28,109.80 and 11,351.85

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Solution

The fourth proportional to 18,749.15, 28,109.80 and 11,351.85 is: 17,019.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.15 : 28,109.80 = 11,351.85 : x
  2. Step 2: Convert to fraction form
    18,749.15/28,109.80 = 11,351.85/x
  3. Step 3: Cross multiply
    18,749.15x = 28,109.80 × 11,351.85
  4. Step 4: Simplify right side
    18,749.15x = 319,098,233.13
  5. Step 5: Solve for x
    x = 319,098,233.13/18,749.15
  6. Step 6: Final answer
    x = 17,019.34

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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.