Home / 20,823.63-31,221.55-11,468.08

Finding the Fourth Proportional to 20,823.63, 31,221.55 and 11,468.08

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Solution

The fourth proportional to 20,823.63, 31,221.55 and 11,468.08 is: 17,194.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.63 : 31,221.55 = 11,468.08 : x
  2. Step 2: Convert to fraction form
    20,823.63/31,221.55 = 11,468.08/x
  3. Step 3: Cross multiply
    20,823.63x = 31,221.55 × 11,468.08
  4. Step 4: Simplify right side
    20,823.63x = 358,051,286.49
  5. Step 5: Solve for x
    x = 358,051,286.49/20,823.63
  6. Step 6: Final answer
    x = 17,194.47

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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.