Home / 21,705.92-29,965.32-14,163.20

Finding the Fourth Proportional to 21,705.92, 29,965.32 and 14,163.20

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Solution

The fourth proportional to 21,705.92, 29,965.32 and 14,163.20 is: 19,552.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.92 : 29,965.32 = 14,163.20 : x
  2. Step 2: Convert to fraction form
    21,705.92/29,965.32 = 14,163.20/x
  3. Step 3: Cross multiply
    21,705.92x = 29,965.32 × 14,163.20
  4. Step 4: Simplify right side
    21,705.92x = 424,404,820.22
  5. Step 5: Solve for x
    x = 424,404,820.22/21,705.92
  6. Step 6: Final answer
    x = 19,552.49

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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.