Home / 20,894.43-31,312.17-11,538.66

Finding the Fourth Proportional to 20,894.43, 31,312.17 and 11,538.66

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Solution

The fourth proportional to 20,894.43, 31,312.17 and 11,538.66 is: 17,291.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.43 : 31,312.17 = 11,538.66 : x
  2. Step 2: Convert to fraction form
    20,894.43/31,312.17 = 11,538.66/x
  3. Step 3: Cross multiply
    20,894.43x = 31,312.17 × 11,538.66
  4. Step 4: Simplify right side
    20,894.43x = 361,300,483.49
  5. Step 5: Solve for x
    x = 361,300,483.49/20,894.43
  6. Step 6: Final answer
    x = 17,291.71

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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.