Home / 20,802.11-31,194.86-12,043.17

Finding the Fourth Proportional to 20,802.11, 31,194.86 and 12,043.17

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Solution

The fourth proportional to 20,802.11, 31,194.86 and 12,043.17 is: 18,059.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.11 : 31,194.86 = 12,043.17 : x
  2. Step 2: Convert to fraction form
    20,802.11/31,194.86 = 12,043.17/x
  3. Step 3: Cross multiply
    20,802.11x = 31,194.86 × 12,043.17
  4. Step 4: Simplify right side
    20,802.11x = 375,684,941.89
  5. Step 5: Solve for x
    x = 375,684,941.89/20,802.11
  6. Step 6: Final answer
    x = 18,059.95

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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.