Home / 20,561.60-30,823.50-7,410.76

Finding the Fourth Proportional to 20,561.60, 30,823.50 and 7,410.76

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Solution

The fourth proportional to 20,561.60, 30,823.50 and 7,410.76 is: 11,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.60 : 30,823.50 = 7,410.76 : x
  2. Step 2: Convert to fraction form
    20,561.60/30,823.50 = 7,410.76/x
  3. Step 3: Cross multiply
    20,561.60x = 30,823.50 × 7,410.76
  4. Step 4: Simplify right side
    20,561.60x = 228,425,560.86
  5. Step 5: Solve for x
    x = 228,425,560.86/20,561.60
  6. Step 6: Final answer
    x = 11,109.33

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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.