Home / 13,318.20-18,385.04-8,604.80

Finding the Fourth Proportional to 13,318.20, 18,385.04 and 8,604.80

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Solution

The fourth proportional to 13,318.20, 18,385.04 and 8,604.80 is: 11,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.20 : 18,385.04 = 8,604.80 : x
  2. Step 2: Convert to fraction form
    13,318.20/18,385.04 = 8,604.80/x
  3. Step 3: Cross multiply
    13,318.20x = 18,385.04 × 8,604.80
  4. Step 4: Simplify right side
    13,318.20x = 158,199,592.19
  5. Step 5: Solve for x
    x = 158,199,592.19/13,318.20
  6. Step 6: Final answer
    x = 11,878.45

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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.