Home / 13,640.48-18,820.32-8,333.44

Finding the Fourth Proportional to 13,640.48, 18,820.32 and 8,333.44

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Solution

The fourth proportional to 13,640.48, 18,820.32 and 8,333.44 is: 11,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.48 : 18,820.32 = 8,333.44 : x
  2. Step 2: Convert to fraction form
    13,640.48/18,820.32 = 8,333.44/x
  3. Step 3: Cross multiply
    13,640.48x = 18,820.32 × 8,333.44
  4. Step 4: Simplify right side
    13,640.48x = 156,838,007.50
  5. Step 5: Solve for x
    x = 156,838,007.50/13,640.48
  6. Step 6: Final answer
    x = 11,497.98

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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.