Home / 11,916.88-16,445.13-6,611.72

Finding the Fourth Proportional to 11,916.88, 16,445.13 and 6,611.72

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Solution

The fourth proportional to 11,916.88, 16,445.13 and 6,611.72 is: 9,124.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.88 : 16,445.13 = 6,611.72 : x
  2. Step 2: Convert to fraction form
    11,916.88/16,445.13 = 6,611.72/x
  3. Step 3: Cross multiply
    11,916.88x = 16,445.13 × 6,611.72
  4. Step 4: Simplify right side
    11,916.88x = 108,730,487.90
  5. Step 5: Solve for x
    x = 108,730,487.90/11,916.88
  6. Step 6: Final answer
    x = 9,124.08

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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.