Home / 20,892.95-31,309.97-11,537.18

Finding the Fourth Proportional to 20,892.95, 31,309.97 and 11,537.18

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Solution

The fourth proportional to 20,892.95, 31,309.97 and 11,537.18 is: 17,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.95 : 31,309.97 = 11,537.18 : x
  2. Step 2: Convert to fraction form
    20,892.95/31,309.97 = 11,537.18/x
  3. Step 3: Cross multiply
    20,892.95x = 31,309.97 × 11,537.18
  4. Step 4: Simplify right side
    20,892.95x = 361,228,838.98
  5. Step 5: Solve for x
    x = 361,228,838.98/20,892.95
  6. Step 6: Final answer
    x = 17,289.50

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1.5x scale

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.