Home / 13,726.74-18,936.62-8,061.39

Finding the Fourth Proportional to 13,726.74, 18,936.62 and 8,061.39

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Solution

The fourth proportional to 13,726.74, 18,936.62 and 8,061.39 is: 11,121.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.74 : 18,936.62 = 8,061.39 : x
  2. Step 2: Convert to fraction form
    13,726.74/18,936.62 = 8,061.39/x
  3. Step 3: Cross multiply
    13,726.74x = 18,936.62 × 8,061.39
  4. Step 4: Simplify right side
    13,726.74x = 152,655,438.79
  5. Step 5: Solve for x
    x = 152,655,438.79/13,726.74
  6. Step 6: Final answer
    x = 11,121.03

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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.