Home / 15,504.63-21,395.15-8,791.29

Finding the Fourth Proportional to 15,504.63, 21,395.15 and 8,791.29

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Solution

The fourth proportional to 15,504.63, 21,395.15 and 8,791.29 is: 12,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.63 : 21,395.15 = 8,791.29 : x
  2. Step 2: Convert to fraction form
    15,504.63/21,395.15 = 8,791.29/x
  3. Step 3: Cross multiply
    15,504.63x = 21,395.15 × 8,791.29
  4. Step 4: Simplify right side
    15,504.63x = 188,090,924.29
  5. Step 5: Solve for x
    x = 188,090,924.29/15,504.63
  6. Step 6: Final answer
    x = 12,131.27

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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.