Home / 13,503.32-18,635.62-7,840.04

Finding the Fourth Proportional to 13,503.32, 18,635.62 and 7,840.04

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Solution

The fourth proportional to 13,503.32, 18,635.62 and 7,840.04 is: 10,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.32 : 18,635.62 = 7,840.04 : x
  2. Step 2: Convert to fraction form
    13,503.32/18,635.62 = 7,840.04/x
  3. Step 3: Cross multiply
    13,503.32x = 18,635.62 × 7,840.04
  4. Step 4: Simplify right side
    13,503.32x = 146,104,006.22
  5. Step 5: Solve for x
    x = 146,104,006.22/13,503.32
  6. Step 6: Final answer
    x = 10,819.86

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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.