Home / 15,918.36-21,894.30-12,767.64

Finding the Fourth Proportional to 15,918.36, 21,894.30 and 12,767.64

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Solution

The fourth proportional to 15,918.36, 21,894.30 and 12,767.64 is: 17,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.36 : 21,894.30 = 12,767.64 : x
  2. Step 2: Convert to fraction form
    15,918.36/21,894.30 = 12,767.64/x
  3. Step 3: Cross multiply
    15,918.36x = 21,894.30 × 12,767.64
  4. Step 4: Simplify right side
    15,918.36x = 279,538,540.45
  5. Step 5: Solve for x
    x = 279,538,540.45/15,918.36
  6. Step 6: Final answer
    x = 17,560.76

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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.