Home / 13,221.83-18,244.96-7,555.45

Finding the Fourth Proportional to 13,221.83, 18,244.96 and 7,555.45

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Solution

The fourth proportional to 13,221.83, 18,244.96 and 7,555.45 is: 10,425.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.83 : 18,244.96 = 7,555.45 : x
  2. Step 2: Convert to fraction form
    13,221.83/18,244.96 = 7,555.45/x
  3. Step 3: Cross multiply
    13,221.83x = 18,244.96 × 7,555.45
  4. Step 4: Simplify right side
    13,221.83x = 137,848,883.03
  5. Step 5: Solve for x
    x = 137,848,883.03/13,221.83
  6. Step 6: Final answer
    x = 10,425.86

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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.