Home / 21,124.88-29,121.27-16,080.31

Finding the Fourth Proportional to 21,124.88, 29,121.27 and 16,080.31

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Solution

The fourth proportional to 21,124.88, 29,121.27 and 16,080.31 is: 22,167.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.88 : 29,121.27 = 16,080.31 : x
  2. Step 2: Convert to fraction form
    21,124.88/29,121.27 = 16,080.31/x
  3. Step 3: Cross multiply
    21,124.88x = 29,121.27 × 16,080.31
  4. Step 4: Simplify right side
    21,124.88x = 468,279,074.79
  5. Step 5: Solve for x
    x = 468,279,074.79/21,124.88
  6. Step 6: Final answer
    x = 22,167.19

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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.