Home / 19,639.12-27,101.86-10,686.66

Finding the Fourth Proportional to 19,639.12, 27,101.86 and 10,686.66

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Solution

The fourth proportional to 19,639.12, 27,101.86 and 10,686.66 is: 14,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.12 : 27,101.86 = 10,686.66 : x
  2. Step 2: Convert to fraction form
    19,639.12/27,101.86 = 10,686.66/x
  3. Step 3: Cross multiply
    19,639.12x = 27,101.86 × 10,686.66
  4. Step 4: Simplify right side
    19,639.12x = 289,628,174.25
  5. Step 5: Solve for x
    x = 289,628,174.25/19,639.12
  6. Step 6: Final answer
    x = 14,747.51

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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.