Home / 15,627.30-21,565.80-8,553.78

Finding the Fourth Proportional to 15,627.30, 21,565.80 and 8,553.78

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Solution

The fourth proportional to 15,627.30, 21,565.80 and 8,553.78 is: 11,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.30 : 21,565.80 = 8,553.78 : x
  2. Step 2: Convert to fraction form
    15,627.30/21,565.80 = 8,553.78/x
  3. Step 3: Cross multiply
    15,627.30x = 21,565.80 × 8,553.78
  4. Step 4: Simplify right side
    15,627.30x = 184,469,108.72
  5. Step 5: Solve for x
    x = 184,469,108.72/15,627.30
  6. Step 6: Final answer
    x = 11,804.29

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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.