Home / 21,345.24-29,454.79-12,391.29

Finding the Fourth Proportional to 21,345.24, 29,454.79 and 12,391.29

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Solution

The fourth proportional to 21,345.24, 29,454.79 and 12,391.29 is: 17,099.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.24 : 29,454.79 = 12,391.29 : x
  2. Step 2: Convert to fraction form
    21,345.24/29,454.79 = 12,391.29/x
  3. Step 3: Cross multiply
    21,345.24x = 29,454.79 × 12,391.29
  4. Step 4: Simplify right side
    21,345.24x = 364,982,844.78
  5. Step 5: Solve for x
    x = 364,982,844.78/21,345.24
  6. Step 6: Final answer
    x = 17,099.03

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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.