Home / 21,336.10-29,443.83-11,904.66

Finding the Fourth Proportional to 21,336.10, 29,443.83 and 11,904.66

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Solution

The fourth proportional to 21,336.10, 29,443.83 and 11,904.66 is: 16,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.10 : 29,443.83 = 11,904.66 : x
  2. Step 2: Convert to fraction form
    21,336.10/29,443.83 = 11,904.66/x
  3. Step 3: Cross multiply
    21,336.10x = 29,443.83 × 11,904.66
  4. Step 4: Simplify right side
    21,336.10x = 350,518,785.25
  5. Step 5: Solve for x
    x = 350,518,785.25/21,336.10
  6. Step 6: Final answer
    x = 16,428.44

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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.