Home / 15,851.33-21,874.79-9,136.91

Finding the Fourth Proportional to 15,851.33, 21,874.79 and 9,136.91

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Solution

The fourth proportional to 15,851.33, 21,874.79 and 9,136.91 is: 12,608.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.33 : 21,874.79 = 9,136.91 : x
  2. Step 2: Convert to fraction form
    15,851.33/21,874.79 = 9,136.91/x
  3. Step 3: Cross multiply
    15,851.33x = 21,874.79 × 9,136.91
  4. Step 4: Simplify right side
    15,851.33x = 199,867,878.12
  5. Step 5: Solve for x
    x = 199,867,878.12/15,851.33
  6. Step 6: Final answer
    x = 12,608.91

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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.