Home / 21,015.33-28,998.05-12,063.21

Finding the Fourth Proportional to 21,015.33, 28,998.05 and 12,063.21

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Solution

The fourth proportional to 21,015.33, 28,998.05 and 12,063.21 is: 16,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.33 : 28,998.05 = 12,063.21 : x
  2. Step 2: Convert to fraction form
    21,015.33/28,998.05 = 12,063.21/x
  3. Step 3: Cross multiply
    21,015.33x = 28,998.05 × 12,063.21
  4. Step 4: Simplify right side
    21,015.33x = 349,809,506.42
  5. Step 5: Solve for x
    x = 349,809,506.42/21,015.33
  6. Step 6: Final answer
    x = 16,645.44

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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.