Home / 21,201.15-29,258.91-12,249.03

Finding the Fourth Proportional to 21,201.15, 29,258.91 and 12,249.03

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Solution

The fourth proportional to 21,201.15, 29,258.91 and 12,249.03 is: 16,904.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.15 : 29,258.91 = 12,249.03 : x
  2. Step 2: Convert to fraction form
    21,201.15/29,258.91 = 12,249.03/x
  3. Step 3: Cross multiply
    21,201.15x = 29,258.91 × 12,249.03
  4. Step 4: Simplify right side
    21,201.15x = 358,393,266.36
  5. Step 5: Solve for x
    x = 358,393,266.36/21,201.15
  6. Step 6: Final answer
    x = 16,904.43

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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.