Home / 13,338.58-18,407.16-7,370.66

Finding the Fourth Proportional to 13,338.58, 18,407.16 and 7,370.66

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Solution

The fourth proportional to 13,338.58, 18,407.16 and 7,370.66 is: 10,171.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.58 : 18,407.16 = 7,370.66 : x
  2. Step 2: Convert to fraction form
    13,338.58/18,407.16 = 7,370.66/x
  3. Step 3: Cross multiply
    13,338.58x = 18,407.16 × 7,370.66
  4. Step 4: Simplify right side
    13,338.58x = 135,672,917.93
  5. Step 5: Solve for x
    x = 135,672,917.93/13,338.58
  6. Step 6: Final answer
    x = 10,171.47

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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.