Home / 21,324.87-31,998.51-15,124.86

Finding the Fourth Proportional to 21,324.87, 31,998.51 and 15,124.86

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Solution

The fourth proportional to 21,324.87, 31,998.51 and 15,124.86 is: 22,695.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.87 : 31,998.51 = 15,124.86 : x
  2. Step 2: Convert to fraction form
    21,324.87/31,998.51 = 15,124.86/x
  3. Step 3: Cross multiply
    21,324.87x = 31,998.51 × 15,124.86
  4. Step 4: Simplify right side
    21,324.87x = 483,972,983.96
  5. Step 5: Solve for x
    x = 483,972,983.96/21,324.87
  6. Step 6: Final answer
    x = 22,695.24

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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.