Home / 15,618.90-21,556.17-8,814.33

Finding the Fourth Proportional to 15,618.90, 21,556.17 and 8,814.33

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Solution

The fourth proportional to 15,618.90, 21,556.17 and 8,814.33 is: 12,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.90 : 21,556.17 = 8,814.33 : x
  2. Step 2: Convert to fraction form
    15,618.90/21,556.17 = 8,814.33/x
  3. Step 3: Cross multiply
    15,618.90x = 21,556.17 × 8,814.33
  4. Step 4: Simplify right side
    15,618.90x = 190,003,195.92
  5. Step 5: Solve for x
    x = 190,003,195.92/15,618.90
  6. Step 6: Final answer
    x = 12,164.95

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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.