Home / 21,127.27-29,155.58-11,695.83

Finding the Fourth Proportional to 21,127.27, 29,155.58 and 11,695.83

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Solution

The fourth proportional to 21,127.27, 29,155.58 and 11,695.83 is: 16,140.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.27 : 29,155.58 = 11,695.83 : x
  2. Step 2: Convert to fraction form
    21,127.27/29,155.58 = 11,695.83/x
  3. Step 3: Cross multiply
    21,127.27x = 29,155.58 × 11,695.83
  4. Step 4: Simplify right side
    21,127.27x = 340,998,561.45
  5. Step 5: Solve for x
    x = 340,998,561.45/21,127.27
  6. Step 6: Final answer
    x = 16,140.21

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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.