Home / 13,765.64-18,996.60-7,478.01

Finding the Fourth Proportional to 13,765.64, 18,996.60 and 7,478.01

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Solution

The fourth proportional to 13,765.64, 18,996.60 and 7,478.01 is: 10,319.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.64 : 18,996.60 = 7,478.01 : x
  2. Step 2: Convert to fraction form
    13,765.64/18,996.60 = 7,478.01/x
  3. Step 3: Cross multiply
    13,765.64x = 18,996.60 × 7,478.01
  4. Step 4: Simplify right side
    13,765.64x = 142,056,764.77
  5. Step 5: Solve for x
    x = 142,056,764.77/13,765.64
  6. Step 6: Final answer
    x = 10,319.66

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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.