Home / 20,835.44-28,752.60-11,403.76

Finding the Fourth Proportional to 20,835.44, 28,752.60 and 11,403.76

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Solution

The fourth proportional to 20,835.44, 28,752.60 and 11,403.76 is: 15,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.44 : 28,752.60 = 11,403.76 : x
  2. Step 2: Convert to fraction form
    20,835.44/28,752.60 = 11,403.76/x
  3. Step 3: Cross multiply
    20,835.44x = 28,752.60 × 11,403.76
  4. Step 4: Simplify right side
    20,835.44x = 327,887,749.78
  5. Step 5: Solve for x
    x = 327,887,749.78/20,835.44
  6. Step 6: Final answer
    x = 15,737.02

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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.