Home / 20,556.20-30,848.70-8,877.80

Finding the Fourth Proportional to 20,556.20, 30,848.70 and 8,877.80

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Solution

The fourth proportional to 20,556.20, 30,848.70 and 8,877.80 is: 13,322.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.20 : 30,848.70 = 8,877.80 : x
  2. Step 2: Convert to fraction form
    20,556.20/30,848.70 = 8,877.80/x
  3. Step 3: Cross multiply
    20,556.20x = 30,848.70 × 8,877.80
  4. Step 4: Simplify right side
    20,556.20x = 273,868,588.86
  5. Step 5: Solve for x
    x = 273,868,588.86/20,556.20
  6. Step 6: Final answer
    x = 13,322.92

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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.