Home / 20,981.82-31,492.17-10,600.86

Finding the Fourth Proportional to 20,981.82, 31,492.17 and 10,600.86

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Solution

The fourth proportional to 20,981.82, 31,492.17 and 10,600.86 is: 15,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.82 : 31,492.17 = 10,600.86 : x
  2. Step 2: Convert to fraction form
    20,981.82/31,492.17 = 10,600.86/x
  3. Step 3: Cross multiply
    20,981.82x = 31,492.17 × 10,600.86
  4. Step 4: Simplify right side
    20,981.82x = 333,844,085.27
  5. Step 5: Solve for x
    x = 333,844,085.27/20,981.82
  6. Step 6: Final answer
    x = 15,911.11

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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.