Home / 21,127.38-29,153.43-11,693.58

Finding the Fourth Proportional to 21,127.38, 29,153.43 and 11,693.58

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Solution

The fourth proportional to 21,127.38, 29,153.43 and 11,693.58 is: 16,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.38 : 29,153.43 = 11,693.58 : x
  2. Step 2: Convert to fraction form
    21,127.38/29,153.43 = 11,693.58/x
  3. Step 3: Cross multiply
    21,127.38x = 29,153.43 × 11,693.58
  4. Step 4: Simplify right side
    21,127.38x = 340,907,965.98
  5. Step 5: Solve for x
    x = 340,907,965.98/21,127.38
  6. Step 6: Final answer
    x = 16,135.84

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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.