Home / 13,816.98-20,684.16-11,970.18

Finding the Fourth Proportional to 13,816.98, 20,684.16 and 11,970.18

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Solution

The fourth proportional to 13,816.98, 20,684.16 and 11,970.18 is: 17,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.98 : 20,684.16 = 11,970.18 : x
  2. Step 2: Convert to fraction form
    13,816.98/20,684.16 = 11,970.18/x
  3. Step 3: Cross multiply
    13,816.98x = 20,684.16 × 11,970.18
  4. Step 4: Simplify right side
    13,816.98x = 247,593,118.35
  5. Step 5: Solve for x
    x = 247,593,118.35/13,816.98
  6. Step 6: Final answer
    x = 17,919.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.