Home / 21,344.08-29,454.36-12,391.36

Finding the Fourth Proportional to 21,344.08, 29,454.36 and 12,391.36

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Solution

The fourth proportional to 21,344.08, 29,454.36 and 12,391.36 is: 17,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.08 : 29,454.36 = 12,391.36 : x
  2. Step 2: Convert to fraction form
    21,344.08/29,454.36 = 12,391.36/x
  3. Step 3: Cross multiply
    21,344.08x = 29,454.36 × 12,391.36
  4. Step 4: Simplify right side
    21,344.08x = 364,979,578.33
  5. Step 5: Solve for x
    x = 364,979,578.33/21,344.08
  6. Step 6: Final answer
    x = 17,099.80

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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.