Home / 13,213.80-18,224.60-11,702.94

Finding the Fourth Proportional to 13,213.80, 18,224.60 and 11,702.94

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Solution

The fourth proportional to 13,213.80, 18,224.60 and 11,702.94 is: 16,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.80 : 18,224.60 = 11,702.94 : x
  2. Step 2: Convert to fraction form
    13,213.80/18,224.60 = 11,702.94/x
  3. Step 3: Cross multiply
    13,213.80x = 18,224.60 × 11,702.94
  4. Step 4: Simplify right side
    13,213.80x = 213,281,400.32
  5. Step 5: Solve for x
    x = 213,281,400.32/13,213.80
  6. Step 6: Final answer
    x = 16,140.81

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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.