Home / 13,311.60-18,369.35-8,005.39

Finding the Fourth Proportional to 13,311.60, 18,369.35 and 8,005.39

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Solution

The fourth proportional to 13,311.60, 18,369.35 and 8,005.39 is: 11,047.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.60 : 18,369.35 = 8,005.39 : x
  2. Step 2: Convert to fraction form
    13,311.60/18,369.35 = 8,005.39/x
  3. Step 3: Cross multiply
    13,311.60x = 18,369.35 × 8,005.39
  4. Step 4: Simplify right side
    13,311.60x = 147,053,810.80
  5. Step 5: Solve for x
    x = 147,053,810.80/13,311.60
  6. Step 6: Final answer
    x = 11,047.04

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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.