Home / 15,786.46-21,784.98-8,616.14

Finding the Fourth Proportional to 15,786.46, 21,784.98 and 8,616.14

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Solution

The fourth proportional to 15,786.46, 21,784.98 and 8,616.14 is: 11,890.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.46 : 21,784.98 = 8,616.14 : x
  2. Step 2: Convert to fraction form
    15,786.46/21,784.98 = 8,616.14/x
  3. Step 3: Cross multiply
    15,786.46x = 21,784.98 × 8,616.14
  4. Step 4: Simplify right side
    15,786.46x = 187,702,442.66
  5. Step 5: Solve for x
    x = 187,702,442.66/15,786.46
  6. Step 6: Final answer
    x = 11,890.09

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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.