Home / 21,080.26-31,617.19-7,929.55

Finding the Fourth Proportional to 21,080.26, 31,617.19 and 7,929.55

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Solution

The fourth proportional to 21,080.26, 31,617.19 and 7,929.55 is: 11,893.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.26 : 31,617.19 = 7,929.55 : x
  2. Step 2: Convert to fraction form
    21,080.26/31,617.19 = 7,929.55/x
  3. Step 3: Cross multiply
    21,080.26x = 31,617.19 × 7,929.55
  4. Step 4: Simplify right side
    21,080.26x = 250,709,891.23
  5. Step 5: Solve for x
    x = 250,709,891.23/21,080.26
  6. Step 6: Final answer
    x = 11,893.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.