Home / 23,108.96-31,879.08-15,147.68

Finding the Fourth Proportional to 23,108.96, 31,879.08 and 15,147.68

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Solution

The fourth proportional to 23,108.96, 31,879.08 and 15,147.68 is: 20,896.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,108.96 : 31,879.08 = 15,147.68 : x
  2. Step 2: Convert to fraction form
    23,108.96/31,879.08 = 15,147.68/x
  3. Step 3: Cross multiply
    23,108.96x = 31,879.08 × 15,147.68
  4. Step 4: Simplify right side
    23,108.96x = 482,894,102.53
  5. Step 5: Solve for x
    x = 482,894,102.53/23,108.96
  6. Step 6: Final answer
    x = 20,896.40

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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.