Home / 15,905.70-21,950.82-9,192.54

Finding the Fourth Proportional to 15,905.70, 21,950.82 and 9,192.54

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Solution

The fourth proportional to 15,905.70, 21,950.82 and 9,192.54 is: 12,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.70 : 21,950.82 = 9,192.54 : x
  2. Step 2: Convert to fraction form
    15,905.70/21,950.82 = 9,192.54/x
  3. Step 3: Cross multiply
    15,905.70x = 21,950.82 × 9,192.54
  4. Step 4: Simplify right side
    15,905.70x = 201,783,790.88
  5. Step 5: Solve for x
    x = 201,783,790.88/15,905.70
  6. Step 6: Final answer
    x = 12,686.26

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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.