Home / 13,689.66-18,853.90-11,800.51

Finding the Fourth Proportional to 13,689.66, 18,853.90 and 11,800.51

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Solution

The fourth proportional to 13,689.66, 18,853.90 and 11,800.51 is: 16,252.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.66 : 18,853.90 = 11,800.51 : x
  2. Step 2: Convert to fraction form
    13,689.66/18,853.90 = 11,800.51/x
  3. Step 3: Cross multiply
    13,689.66x = 18,853.90 × 11,800.51
  4. Step 4: Simplify right side
    13,689.66x = 222,485,635.49
  5. Step 5: Solve for x
    x = 222,485,635.49/13,689.66
  6. Step 6: Final answer
    x = 16,252.09

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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.