Home / 30,610.92-45,811.53-21,261.48

Finding the Fourth Proportional to 30,610.92, 45,811.53 and 21,261.48

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Solution

The fourth proportional to 30,610.92, 45,811.53 and 21,261.48 is: 31,819.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,610.92 : 45,811.53 = 21,261.48 : x
  2. Step 2: Convert to fraction form
    30,610.92/45,811.53 = 21,261.48/x
  3. Step 3: Cross multiply
    30,610.92x = 45,811.53 × 21,261.48
  4. Step 4: Simplify right side
    30,610.92x = 974,020,928.86
  5. Step 5: Solve for x
    x = 974,020,928.86/30,610.92
  6. Step 6: Final answer
    x = 31,819.39

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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.