Home / 21,635.19-29,856.56-11,699.19

Finding the Fourth Proportional to 21,635.19, 29,856.56 and 11,699.19

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Solution

The fourth proportional to 21,635.19, 29,856.56 and 11,699.19 is: 16,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.19 : 29,856.56 = 11,699.19 : x
  2. Step 2: Convert to fraction form
    21,635.19/29,856.56 = 11,699.19/x
  3. Step 3: Cross multiply
    21,635.19x = 29,856.56 × 11,699.19
  4. Step 4: Simplify right side
    21,635.19x = 349,297,568.19
  5. Step 5: Solve for x
    x = 349,297,568.19/21,635.19
  6. Step 6: Final answer
    x = 16,144.88

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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.