Home / 21,708.77-29,972.31-16,699.17

Finding the Fourth Proportional to 21,708.77, 29,972.31 and 16,699.17

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Solution

The fourth proportional to 21,708.77, 29,972.31 and 16,699.17 is: 23,055.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.77 : 29,972.31 = 16,699.17 : x
  2. Step 2: Convert to fraction form
    21,708.77/29,972.31 = 16,699.17/x
  3. Step 3: Cross multiply
    21,708.77x = 29,972.31 × 16,699.17
  4. Step 4: Simplify right side
    21,708.77x = 500,512,699.98
  5. Step 5: Solve for x
    x = 500,512,699.98/21,708.77
  6. Step 6: Final answer
    x = 23,055.78

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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.