Home / 20,477.67-30,723.77-11,719.95

Finding the Fourth Proportional to 20,477.67, 30,723.77 and 11,719.95

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Solution

The fourth proportional to 20,477.67, 30,723.77 and 11,719.95 is: 17,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.67 : 30,723.77 = 11,719.95 : x
  2. Step 2: Convert to fraction form
    20,477.67/30,723.77 = 11,719.95/x
  3. Step 3: Cross multiply
    20,477.67x = 30,723.77 × 11,719.95
  4. Step 4: Simplify right side
    20,477.67x = 360,080,989.61
  5. Step 5: Solve for x
    x = 360,080,989.61/20,477.67
  6. Step 6: Final answer
    x = 17,584.08

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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.