Home / 13,199.72-18,238.41-12,726.77

Finding the Fourth Proportional to 13,199.72, 18,238.41 and 12,726.77

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Solution

The fourth proportional to 13,199.72, 18,238.41 and 12,726.77 is: 17,584.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.72 : 18,238.41 = 12,726.77 : x
  2. Step 2: Convert to fraction form
    13,199.72/18,238.41 = 12,726.77/x
  3. Step 3: Cross multiply
    13,199.72x = 18,238.41 × 12,726.77
  4. Step 4: Simplify right side
    13,199.72x = 232,115,958.04
  5. Step 5: Solve for x
    x = 232,115,958.04/13,199.72
  6. Step 6: Final answer
    x = 17,584.92

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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.