Home / 20,410.69-28,166.50-11,457.96

Finding the Fourth Proportional to 20,410.69, 28,166.50 and 11,457.96

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Solution

The fourth proportional to 20,410.69, 28,166.50 and 11,457.96 is: 15,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.69 : 28,166.50 = 11,457.96 : x
  2. Step 2: Convert to fraction form
    20,410.69/28,166.50 = 11,457.96/x
  3. Step 3: Cross multiply
    20,410.69x = 28,166.50 × 11,457.96
  4. Step 4: Simplify right side
    20,410.69x = 322,730,729.70
  5. Step 5: Solve for x
    x = 322,730,729.70/20,410.69
  6. Step 6: Final answer
    x = 15,811.85

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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.