Home / 12,915.06-17,824.10-7,611.59

Finding the Fourth Proportional to 12,915.06, 17,824.10 and 7,611.59

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Solution

The fourth proportional to 12,915.06, 17,824.10 and 7,611.59 is: 10,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.06 : 17,824.10 = 7,611.59 : x
  2. Step 2: Convert to fraction form
    12,915.06/17,824.10 = 7,611.59/x
  3. Step 3: Cross multiply
    12,915.06x = 17,824.10 × 7,611.59
  4. Step 4: Simplify right side
    12,915.06x = 135,669,614.14
  5. Step 5: Solve for x
    x = 135,669,614.14/12,915.06
  6. Step 6: Final answer
    x = 10,504.76

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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.