Home / 13,981.80-19,293.75-8,013.99

Finding the Fourth Proportional to 13,981.80, 19,293.75 and 8,013.99

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Solution

The fourth proportional to 13,981.80, 19,293.75 and 8,013.99 is: 11,058.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.80 : 19,293.75 = 8,013.99 : x
  2. Step 2: Convert to fraction form
    13,981.80/19,293.75 = 8,013.99/x
  3. Step 3: Cross multiply
    13,981.80x = 19,293.75 × 8,013.99
  4. Step 4: Simplify right side
    13,981.80x = 154,619,919.56
  5. Step 5: Solve for x
    x = 154,619,919.56/13,981.80
  6. Step 6: Final answer
    x = 11,058.66

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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.