Home / 21,344.24-29,453.42-12,390.29

Finding the Fourth Proportional to 21,344.24, 29,453.42 and 12,390.29

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Solution

The fourth proportional to 21,344.24, 29,453.42 and 12,390.29 is: 17,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.24 : 29,453.42 = 12,390.29 : x
  2. Step 2: Convert to fraction form
    21,344.24/29,453.42 = 12,390.29/x
  3. Step 3: Cross multiply
    21,344.24x = 29,453.42 × 12,390.29
  4. Step 4: Simplify right side
    21,344.24x = 364,936,206.07
  5. Step 5: Solve for x
    x = 364,936,206.07/21,344.24
  6. Step 6: Final answer
    x = 17,097.65

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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.