Home / 21,127.14-29,155.44-11,696.31

Finding the Fourth Proportional to 21,127.14, 29,155.44 and 11,696.31

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Solution

The fourth proportional to 21,127.14, 29,155.44 and 11,696.31 is: 16,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.14 : 29,155.44 = 11,696.31 : x
  2. Step 2: Convert to fraction form
    21,127.14/29,155.44 = 11,696.31/x
  3. Step 3: Cross multiply
    21,127.14x = 29,155.44 × 11,696.31
  4. Step 4: Simplify right side
    21,127.14x = 341,011,064.43
  5. Step 5: Solve for x
    x = 341,011,064.43/21,127.14
  6. Step 6: Final answer
    x = 16,140.90

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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.