Home / 21,429.44-29,572.32-11,998.40

Finding the Fourth Proportional to 21,429.44, 29,572.32 and 11,998.40

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Solution

The fourth proportional to 21,429.44, 29,572.32 and 11,998.40 is: 16,557.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.44 : 29,572.32 = 11,998.40 : x
  2. Step 2: Convert to fraction form
    21,429.44/29,572.32 = 11,998.40/x
  3. Step 3: Cross multiply
    21,429.44x = 29,572.32 × 11,998.40
  4. Step 4: Simplify right side
    21,429.44x = 354,820,524.29
  5. Step 5: Solve for x
    x = 354,820,524.29/21,429.44
  6. Step 6: Final answer
    x = 16,557.62

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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.