Home / 20,762.42-28,652.14-11,811.66

Finding the Fourth Proportional to 20,762.42, 28,652.14 and 11,811.66

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Solution

The fourth proportional to 20,762.42, 28,652.14 and 11,811.66 is: 16,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.42 : 28,652.14 = 11,811.66 : x
  2. Step 2: Convert to fraction form
    20,762.42/28,652.14 = 11,811.66/x
  3. Step 3: Cross multiply
    20,762.42x = 28,652.14 × 11,811.66
  4. Step 4: Simplify right side
    20,762.42x = 338,429,335.95
  5. Step 5: Solve for x
    x = 338,429,335.95/20,762.42
  6. Step 6: Final answer
    x = 16,300.09

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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.