Home / 21,624.68-29,844.38-12,679.72

Finding the Fourth Proportional to 21,624.68, 29,844.38 and 12,679.72

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Solution

The fourth proportional to 21,624.68, 29,844.38 and 12,679.72 is: 17,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.68 : 29,844.38 = 12,679.72 : x
  2. Step 2: Convert to fraction form
    21,624.68/29,844.38 = 12,679.72/x
  3. Step 3: Cross multiply
    21,624.68x = 29,844.38 × 12,679.72
  4. Step 4: Simplify right side
    21,624.68x = 378,418,339.06
  5. Step 5: Solve for x
    x = 378,418,339.06/21,624.68
  6. Step 6: Final answer
    x = 17,499.37

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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.