Home / 21,018.26-29,005.20-11,586.83

Finding the Fourth Proportional to 21,018.26, 29,005.20 and 11,586.83

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Solution

The fourth proportional to 21,018.26, 29,005.20 and 11,586.83 is: 15,989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.26 : 29,005.20 = 11,586.83 : x
  2. Step 2: Convert to fraction form
    21,018.26/29,005.20 = 11,586.83/x
  3. Step 3: Cross multiply
    21,018.26x = 29,005.20 × 11,586.83
  4. Step 4: Simplify right side
    21,018.26x = 336,078,176.49
  5. Step 5: Solve for x
    x = 336,078,176.49/21,018.26
  6. Step 6: Final answer
    x = 15,989.82

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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.