Home / 18,819.87-25,971.68-10,321.43

Finding the Fourth Proportional to 18,819.87, 25,971.68 and 10,321.43

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Solution

The fourth proportional to 18,819.87, 25,971.68 and 10,321.43 is: 14,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.87 : 25,971.68 = 10,321.43 : x
  2. Step 2: Convert to fraction form
    18,819.87/25,971.68 = 10,321.43/x
  3. Step 3: Cross multiply
    18,819.87x = 25,971.68 × 10,321.43
  4. Step 4: Simplify right side
    18,819.87x = 268,064,877.10
  5. Step 5: Solve for x
    x = 268,064,877.10/18,819.87
  6. Step 6: Final answer
    x = 14,243.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.