Home / 21,906.08-30,222.80-12,472.32

Finding the Fourth Proportional to 21,906.08, 30,222.80 and 12,472.32

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Solution

The fourth proportional to 21,906.08, 30,222.80 and 12,472.32 is: 17,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.08 : 30,222.80 = 12,472.32 : x
  2. Step 2: Convert to fraction form
    21,906.08/30,222.80 = 12,472.32/x
  3. Step 3: Cross multiply
    21,906.08x = 30,222.80 × 12,472.32
  4. Step 4: Simplify right side
    21,906.08x = 376,948,432.90
  5. Step 5: Solve for x
    x = 376,948,432.90/21,906.08
  6. Step 6: Final answer
    x = 17,207.48

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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.