Home / 20,564.20-30,860.70-8,885.80

Finding the Fourth Proportional to 20,564.20, 30,860.70 and 8,885.80

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Solution

The fourth proportional to 20,564.20, 30,860.70 and 8,885.80 is: 13,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.20 : 30,860.70 = 8,885.80 : x
  2. Step 2: Convert to fraction form
    20,564.20/30,860.70 = 8,885.80/x
  3. Step 3: Cross multiply
    20,564.20x = 30,860.70 × 8,885.80
  4. Step 4: Simplify right side
    20,564.20x = 274,222,008.06
  5. Step 5: Solve for x
    x = 274,222,008.06/20,564.20
  6. Step 6: Final answer
    x = 13,334.92

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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.