Home / 13,612.04-18,786.66-8,309.94

Finding the Fourth Proportional to 13,612.04, 18,786.66 and 8,309.94

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Solution

The fourth proportional to 13,612.04, 18,786.66 and 8,309.94 is: 11,468.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.04 : 18,786.66 = 8,309.94 : x
  2. Step 2: Convert to fraction form
    13,612.04/18,786.66 = 8,309.94/x
  3. Step 3: Cross multiply
    13,612.04x = 18,786.66 × 8,309.94
  4. Step 4: Simplify right side
    13,612.04x = 156,116,017.40
  5. Step 5: Solve for x
    x = 156,116,017.40/13,612.04
  6. Step 6: Final answer
    x = 11,468.97

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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.