Home / 15,918.88-21,965.60-8,845.28

Finding the Fourth Proportional to 15,918.88, 21,965.60 and 8,845.28

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Solution

The fourth proportional to 15,918.88, 21,965.60 and 8,845.28 is: 12,205.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.88 : 21,965.60 = 8,845.28 : x
  2. Step 2: Convert to fraction form
    15,918.88/21,965.60 = 8,845.28/x
  3. Step 3: Cross multiply
    15,918.88x = 21,965.60 × 8,845.28
  4. Step 4: Simplify right side
    15,918.88x = 194,291,882.37
  5. Step 5: Solve for x
    x = 194,291,882.37/15,918.88
  6. Step 6: Final answer
    x = 12,205.12

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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.