Home / 21,167.64-29,212.68-12,215.52

Finding the Fourth Proportional to 21,167.64, 29,212.68 and 12,215.52

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Solution

The fourth proportional to 21,167.64, 29,212.68 and 12,215.52 is: 16,858.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.64 : 29,212.68 = 12,215.52 : x
  2. Step 2: Convert to fraction form
    21,167.64/29,212.68 = 12,215.52/x
  3. Step 3: Cross multiply
    21,167.64x = 29,212.68 × 12,215.52
  4. Step 4: Simplify right side
    21,167.64x = 356,848,076.79
  5. Step 5: Solve for x
    x = 356,848,076.79/21,167.64
  6. Step 6: Final answer
    x = 16,858.19

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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.