Home / 11,215.02-15,466.23-8,862.78

Finding the Fourth Proportional to 11,215.02, 15,466.23 and 8,862.78

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Solution

The fourth proportional to 11,215.02, 15,466.23 and 8,862.78 is: 12,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.02 : 15,466.23 = 8,862.78 : x
  2. Step 2: Convert to fraction form
    11,215.02/15,466.23 = 8,862.78/x
  3. Step 3: Cross multiply
    11,215.02x = 15,466.23 × 8,862.78
  4. Step 4: Simplify right side
    11,215.02x = 137,073,793.92
  5. Step 5: Solve for x
    x = 137,073,793.92/11,215.02
  6. Step 6: Final answer
    x = 12,222.34

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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.