Home / 21,438.12-29,584.32-12,006.84

Finding the Fourth Proportional to 21,438.12, 29,584.32 and 12,006.84

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Solution

The fourth proportional to 21,438.12, 29,584.32 and 12,006.84 is: 16,569.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.12 : 29,584.32 = 12,006.84 : x
  2. Step 2: Convert to fraction form
    21,438.12/29,584.32 = 12,006.84/x
  3. Step 3: Cross multiply
    21,438.12x = 29,584.32 × 12,006.84
  4. Step 4: Simplify right side
    21,438.12x = 355,214,196.75
  5. Step 5: Solve for x
    x = 355,214,196.75/21,438.12
  6. Step 6: Final answer
    x = 16,569.28

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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.