Home / 21,162.38-29,242.14-15,183.56

Finding the Fourth Proportional to 21,162.38, 29,242.14 and 15,183.56

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Solution

The fourth proportional to 21,162.38, 29,242.14 and 15,183.56 is: 20,980.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.38 : 29,242.14 = 15,183.56 : x
  2. Step 2: Convert to fraction form
    21,162.38/29,242.14 = 15,183.56/x
  3. Step 3: Cross multiply
    21,162.38x = 29,242.14 × 15,183.56
  4. Step 4: Simplify right side
    21,162.38x = 443,999,787.22
  5. Step 5: Solve for x
    x = 443,999,787.22/21,162.38
  6. Step 6: Final answer
    x = 20,980.62

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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.