Home / 21,124.67-29,120.98-16,080.10

Finding the Fourth Proportional to 21,124.67, 29,120.98 and 16,080.10

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Solution

The fourth proportional to 21,124.67, 29,120.98 and 16,080.10 is: 22,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.67 : 29,120.98 = 16,080.10 : x
  2. Step 2: Convert to fraction form
    21,124.67/29,120.98 = 16,080.10/x
  3. Step 3: Cross multiply
    21,124.67x = 29,120.98 × 16,080.10
  4. Step 4: Simplify right side
    21,124.67x = 468,268,187.65
  5. Step 5: Solve for x
    x = 468,268,187.65/21,124.67
  6. Step 6: Final answer
    x = 22,166.89

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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.