Home / 12,623.05-18,915.09-7,691.41

Finding the Fourth Proportional to 12,623.05, 18,915.09 and 7,691.41

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Solution

The fourth proportional to 12,623.05, 18,915.09 and 7,691.41 is: 11,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.05 : 18,915.09 = 7,691.41 : x
  2. Step 2: Convert to fraction form
    12,623.05/18,915.09 = 7,691.41/x
  3. Step 3: Cross multiply
    12,623.05x = 18,915.09 × 7,691.41
  4. Step 4: Simplify right side
    12,623.05x = 145,483,712.38
  5. Step 5: Solve for x
    x = 145,483,712.38/12,623.05
  6. Step 6: Final answer
    x = 11,525.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.