Home / 15,905.14-21,949.70-8,735.66

Finding the Fourth Proportional to 15,905.14, 21,949.70 and 8,735.66

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Solution

The fourth proportional to 15,905.14, 21,949.70 and 8,735.66 is: 12,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.14 : 21,949.70 = 8,735.66 : x
  2. Step 2: Convert to fraction form
    15,905.14/21,949.70 = 8,735.66/x
  3. Step 3: Cross multiply
    15,905.14x = 21,949.70 × 8,735.66
  4. Step 4: Simplify right side
    15,905.14x = 191,745,116.30
  5. Step 5: Solve for x
    x = 191,745,116.30/15,905.14
  6. Step 6: Final answer
    x = 12,055.54

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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.