Home / 21,014.15-28,999.52-11,454.05

Finding the Fourth Proportional to 21,014.15, 28,999.52 and 11,454.05

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Solution

The fourth proportional to 21,014.15, 28,999.52 and 11,454.05 is: 15,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.15 : 28,999.52 = 11,454.05 : x
  2. Step 2: Convert to fraction form
    21,014.15/28,999.52 = 11,454.05/x
  3. Step 3: Cross multiply
    21,014.15x = 28,999.52 × 11,454.05
  4. Step 4: Simplify right side
    21,014.15x = 332,161,749.79
  5. Step 5: Solve for x
    x = 332,161,749.79/21,014.15
  6. Step 6: Final answer
    x = 15,806.58

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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.