Home / 21,126.24-31,678.43-11,262.87

Finding the Fourth Proportional to 21,126.24, 31,678.43 and 11,262.87

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Solution

The fourth proportional to 21,126.24, 31,678.43 and 11,262.87 is: 16,888.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.24 : 31,678.43 = 11,262.87 : x
  2. Step 2: Convert to fraction form
    21,126.24/31,678.43 = 11,262.87/x
  3. Step 3: Cross multiply
    21,126.24x = 31,678.43 × 11,262.87
  4. Step 4: Simplify right side
    21,126.24x = 356,789,982.58
  5. Step 5: Solve for x
    x = 356,789,982.58/21,126.24
  6. Step 6: Final answer
    x = 16,888.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.