Home / 15,358.75-21,194.93-8,644.66

Finding the Fourth Proportional to 15,358.75, 21,194.93 and 8,644.66

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Solution

The fourth proportional to 15,358.75, 21,194.93 and 8,644.66 is: 11,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.75 : 21,194.93 = 8,644.66 : x
  2. Step 2: Convert to fraction form
    15,358.75/21,194.93 = 8,644.66/x
  3. Step 3: Cross multiply
    15,358.75x = 21,194.93 × 8,644.66
  4. Step 4: Simplify right side
    15,358.75x = 183,222,932.20
  5. Step 5: Solve for x
    x = 183,222,932.20/15,358.75
  6. Step 6: Final answer
    x = 11,929.55

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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.