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Finding the Fourth Proportional to 15,771.06, 21,763.74 and 8,601.06

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Solution

The fourth proportional to 15,771.06, 21,763.74 and 8,601.06 is: 11,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,771.06 : 21,763.74 = 8,601.06 : x
  2. Step 2: Convert to fraction form
    15,771.06/21,763.74 = 8,601.06/x
  3. Step 3: Cross multiply
    15,771.06x = 21,763.74 × 8,601.06
  4. Step 4: Simplify right side
    15,771.06x = 187,191,233.56
  5. Step 5: Solve for x
    x = 187,191,233.56/15,771.06
  6. Step 6: Final answer
    x = 11,869.29

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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.