Home / 13,379.43-18,465.90-7,713.18

Finding the Fourth Proportional to 13,379.43, 18,465.90 and 7,713.18

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Solution

The fourth proportional to 13,379.43, 18,465.90 and 7,713.18 is: 10,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.43 : 18,465.90 = 7,713.18 : x
  2. Step 2: Convert to fraction form
    13,379.43/18,465.90 = 7,713.18/x
  3. Step 3: Cross multiply
    13,379.43x = 18,465.90 × 7,713.18
  4. Step 4: Simplify right side
    13,379.43x = 142,430,810.56
  5. Step 5: Solve for x
    x = 142,430,810.56/13,379.43
  6. Step 6: Final answer
    x = 10,645.51

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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.