Home / 20,873.45-31,310.17-10,876.12

Finding the Fourth Proportional to 20,873.45, 31,310.17 and 10,876.12

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Solution

The fourth proportional to 20,873.45, 31,310.17 and 10,876.12 is: 16,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.45 : 31,310.17 = 10,876.12 : x
  2. Step 2: Convert to fraction form
    20,873.45/31,310.17 = 10,876.12/x
  3. Step 3: Cross multiply
    20,873.45x = 31,310.17 × 10,876.12
  4. Step 4: Simplify right side
    20,873.45x = 340,533,166.14
  5. Step 5: Solve for x
    x = 340,533,166.14/20,873.45
  6. Step 6: Final answer
    x = 16,314.18

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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.