Home / 21,669.62-29,903.73-12,109.64

Finding the Fourth Proportional to 21,669.62, 29,903.73 and 12,109.64

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Solution

The fourth proportional to 21,669.62, 29,903.73 and 12,109.64 is: 16,711.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.62 : 29,903.73 = 12,109.64 : x
  2. Step 2: Convert to fraction form
    21,669.62/29,903.73 = 12,109.64/x
  3. Step 3: Cross multiply
    21,669.62x = 29,903.73 × 12,109.64
  4. Step 4: Simplify right side
    21,669.62x = 362,123,404.96
  5. Step 5: Solve for x
    x = 362,123,404.96/21,669.62
  6. Step 6: Final answer
    x = 16,711.11

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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.