Home / 15,911.44-21,955.20-8,837.68

Finding the Fourth Proportional to 15,911.44, 21,955.20 and 8,837.68

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Solution

The fourth proportional to 15,911.44, 21,955.20 and 8,837.68 is: 12,194.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.44 : 21,955.20 = 8,837.68 : x
  2. Step 2: Convert to fraction form
    15,911.44/21,955.20 = 8,837.68/x
  3. Step 3: Cross multiply
    15,911.44x = 21,955.20 × 8,837.68
  4. Step 4: Simplify right side
    15,911.44x = 194,033,031.94
  5. Step 5: Solve for x
    x = 194,033,031.94/15,911.44
  6. Step 6: Final answer
    x = 12,194.56

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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.