Home / 21,904.92-30,228.24-12,472.86

Finding the Fourth Proportional to 21,904.92, 30,228.24 and 12,472.86

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Solution

The fourth proportional to 21,904.92, 30,228.24 and 12,472.86 is: 17,212.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.92 : 30,228.24 = 12,472.86 : x
  2. Step 2: Convert to fraction form
    21,904.92/30,228.24 = 12,472.86/x
  3. Step 3: Cross multiply
    21,904.92x = 30,228.24 × 12,472.86
  4. Step 4: Simplify right side
    21,904.92x = 377,032,605.57
  5. Step 5: Solve for x
    x = 377,032,605.57/21,904.92
  6. Step 6: Final answer
    x = 17,212.23

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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.