Home / 21,429.10-29,572.14-11,997.67

Finding the Fourth Proportional to 21,429.10, 29,572.14 and 11,997.67

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Solution

The fourth proportional to 21,429.10, 29,572.14 and 11,997.67 is: 16,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.10 : 29,572.14 = 11,997.67 : x
  2. Step 2: Convert to fraction form
    21,429.10/29,572.14 = 11,997.67/x
  3. Step 3: Cross multiply
    21,429.10x = 29,572.14 × 11,997.67
  4. Step 4: Simplify right side
    21,429.10x = 354,796,776.91
  5. Step 5: Solve for x
    x = 354,796,776.91/21,429.10
  6. Step 6: Final answer
    x = 16,556.77

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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.