Home / 11,255.02-15,521.43-8,902.78

Finding the Fourth Proportional to 11,255.02, 15,521.43 and 8,902.78

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Solution

The fourth proportional to 11,255.02, 15,521.43 and 8,902.78 is: 12,277.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255.02 : 15,521.43 = 8,902.78 : x
  2. Step 2: Convert to fraction form
    11,255.02/15,521.43 = 8,902.78/x
  3. Step 3: Cross multiply
    11,255.02x = 15,521.43 × 8,902.78
  4. Step 4: Simplify right side
    11,255.02x = 138,183,876.58
  5. Step 5: Solve for x
    x = 138,183,876.58/11,255.02
  6. Step 6: Final answer
    x = 12,277.53

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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.