Home / 21,432.26-29,574.78-11,999

Finding the Fourth Proportional to 21,432.26, 29,574.78 and 11,999

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Solution

The fourth proportional to 21,432.26, 29,574.78 and 11,999 is: 16,557.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.26 : 29,574.78 = 11,999 : x
  2. Step 2: Convert to fraction form
    21,432.26/29,574.78 = 11,999/x
  3. Step 3: Cross multiply
    21,432.26x = 29,574.78 × 11,999
  4. Step 4: Simplify right side
    21,432.26x = 354,867,785.22
  5. Step 5: Solve for x
    x = 354,867,785.22/21,432.26
  6. Step 6: Final answer
    x = 16,557.65

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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.