Home / 11,156.01-15,411.32-8,914.95

Finding the Fourth Proportional to 11,156.01, 15,411.32 and 8,914.95

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Solution

The fourth proportional to 11,156.01, 15,411.32 and 8,914.95 is: 12,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.01 : 15,411.32 = 8,914.95 : x
  2. Step 2: Convert to fraction form
    11,156.01/15,411.32 = 8,914.95/x
  3. Step 3: Cross multiply
    11,156.01x = 15,411.32 × 8,914.95
  4. Step 4: Simplify right side
    11,156.01x = 137,391,102.66
  5. Step 5: Solve for x
    x = 137,391,102.66/11,156.01
  6. Step 6: Final answer
    x = 12,315.43

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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.