Home / 11,915.29-16,445.08-6,611.82

Finding the Fourth Proportional to 11,915.29, 16,445.08 and 6,611.82

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Solution

The fourth proportional to 11,915.29, 16,445.08 and 6,611.82 is: 9,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.29 : 16,445.08 = 6,611.82 : x
  2. Step 2: Convert to fraction form
    11,915.29/16,445.08 = 6,611.82/x
  3. Step 3: Cross multiply
    11,915.29x = 16,445.08 × 6,611.82
  4. Step 4: Simplify right side
    11,915.29x = 108,731,834.67
  5. Step 5: Solve for x
    x = 108,731,834.67/11,915.29
  6. Step 6: Final answer
    x = 9,125.40

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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.