Home / 19,687.05-27,177.32-12,617.51

Finding the Fourth Proportional to 19,687.05, 27,177.32 and 12,617.51

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Solution

The fourth proportional to 19,687.05, 27,177.32 and 12,617.51 is: 17,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.05 : 27,177.32 = 12,617.51 : x
  2. Step 2: Convert to fraction form
    19,687.05/27,177.32 = 12,617.51/x
  3. Step 3: Cross multiply
    19,687.05x = 27,177.32 × 12,617.51
  4. Step 4: Simplify right side
    19,687.05x = 342,910,002.53
  5. Step 5: Solve for x
    x = 342,910,002.53/19,687.05
  6. Step 6: Final answer
    x = 17,418.05

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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.