Home / 20,655.19-30,933.51-11,281.15

Finding the Fourth Proportional to 20,655.19, 30,933.51 and 11,281.15

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Solution

The fourth proportional to 20,655.19, 30,933.51 and 11,281.15 is: 16,894.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.19 : 30,933.51 = 11,281.15 : x
  2. Step 2: Convert to fraction form
    20,655.19/30,933.51 = 11,281.15/x
  3. Step 3: Cross multiply
    20,655.19x = 30,933.51 × 11,281.15
  4. Step 4: Simplify right side
    20,655.19x = 348,965,566.34
  5. Step 5: Solve for x
    x = 348,965,566.34/20,655.19
  6. Step 6: Final answer
    x = 16,894.81

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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.