Home / 13,726.14-18,943.47-8,690.64

Finding the Fourth Proportional to 13,726.14, 18,943.47 and 8,690.64

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Solution

The fourth proportional to 13,726.14, 18,943.47 and 8,690.64 is: 11,993.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.14 : 18,943.47 = 8,690.64 : x
  2. Step 2: Convert to fraction form
    13,726.14/18,943.47 = 8,690.64/x
  3. Step 3: Cross multiply
    13,726.14x = 18,943.47 × 8,690.64
  4. Step 4: Simplify right side
    13,726.14x = 164,630,878.12
  5. Step 5: Solve for x
    x = 164,630,878.12/13,726.14
  6. Step 6: Final answer
    x = 11,993.97

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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.