Home / 13,328.87-18,393.80-7,360.56

Finding the Fourth Proportional to 13,328.87, 18,393.80 and 7,360.56

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Solution

The fourth proportional to 13,328.87, 18,393.80 and 7,360.56 is: 10,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.87 : 18,393.80 = 7,360.56 : x
  2. Step 2: Convert to fraction form
    13,328.87/18,393.80 = 7,360.56/x
  3. Step 3: Cross multiply
    13,328.87x = 18,393.80 × 7,360.56
  4. Step 4: Simplify right side
    13,328.87x = 135,388,631.73
  5. Step 5: Solve for x
    x = 135,388,631.73/13,328.87
  6. Step 6: Final answer
    x = 10,157.55

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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.