Home / 21,778.59-30,052.64-12,217.15

Finding the Fourth Proportional to 21,778.59, 30,052.64 and 12,217.15

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Solution

The fourth proportional to 21,778.59, 30,052.64 and 12,217.15 is: 16,858.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.59 : 30,052.64 = 12,217.15 : x
  2. Step 2: Convert to fraction form
    21,778.59/30,052.64 = 12,217.15/x
  3. Step 3: Cross multiply
    21,778.59x = 30,052.64 × 12,217.15
  4. Step 4: Simplify right side
    21,778.59x = 367,157,610.78
  5. Step 5: Solve for x
    x = 367,157,610.78/21,778.59
  6. Step 6: Final answer
    x = 16,858.65

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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.