Home / 13,347.77-18,419.82-7,379.69

Finding the Fourth Proportional to 13,347.77, 18,419.82 and 7,379.69

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Solution

The fourth proportional to 13,347.77, 18,419.82 and 7,379.69 is: 10,183.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.77 : 18,419.82 = 7,379.69 : x
  2. Step 2: Convert to fraction form
    13,347.77/18,419.82 = 7,379.69/x
  3. Step 3: Cross multiply
    13,347.77x = 18,419.82 × 7,379.69
  4. Step 4: Simplify right side
    13,347.77x = 135,932,561.46
  5. Step 5: Solve for x
    x = 135,932,561.46/13,347.77
  6. Step 6: Final answer
    x = 10,183.92

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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.