Home / 21,706.26-29,955.27-12,145.86

Finding the Fourth Proportional to 21,706.26, 29,955.27 and 12,145.86

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Solution

The fourth proportional to 21,706.26, 29,955.27 and 12,145.86 is: 16,761.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706.26 : 29,955.27 = 12,145.86 : x
  2. Step 2: Convert to fraction form
    21,706.26/29,955.27 = 12,145.86/x
  3. Step 3: Cross multiply
    21,706.26x = 29,955.27 × 12,145.86
  4. Step 4: Simplify right side
    21,706.26x = 363,832,515.68
  5. Step 5: Solve for x
    x = 363,832,515.68/21,706.26
  6. Step 6: Final answer
    x = 16,761.64

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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.