Home / 15,790.75-21,788.90-9,076.66

Finding the Fourth Proportional to 15,790.75, 21,788.90 and 9,076.66

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Solution

The fourth proportional to 15,790.75, 21,788.90 and 9,076.66 is: 12,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.75 : 21,788.90 = 9,076.66 : x
  2. Step 2: Convert to fraction form
    15,790.75/21,788.90 = 9,076.66/x
  3. Step 3: Cross multiply
    15,790.75x = 21,788.90 × 9,076.66
  4. Step 4: Simplify right side
    15,790.75x = 197,770,371.26
  5. Step 5: Solve for x
    x = 197,770,371.26/15,790.75
  6. Step 6: Final answer
    x = 12,524.45

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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.