Home / 21,170.37-29,214.87-12,217.68

Finding the Fourth Proportional to 21,170.37, 29,214.87 and 12,217.68

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Solution

The fourth proportional to 21,170.37, 29,214.87 and 12,217.68 is: 16,860.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.37 : 29,214.87 = 12,217.68 : x
  2. Step 2: Convert to fraction form
    21,170.37/29,214.87 = 12,217.68/x
  3. Step 3: Cross multiply
    21,170.37x = 29,214.87 × 12,217.68
  4. Step 4: Simplify right side
    21,170.37x = 356,937,932.90
  5. Step 5: Solve for x
    x = 356,937,932.90/21,170.37
  6. Step 6: Final answer
    x = 16,860.26

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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.