Home / 13,328.80-18,393.82-7,360.72

Finding the Fourth Proportional to 13,328.80, 18,393.82 and 7,360.72

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Solution

The fourth proportional to 13,328.80, 18,393.82 and 7,360.72 is: 10,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.80 : 18,393.82 = 7,360.72 : x
  2. Step 2: Convert to fraction form
    13,328.80/18,393.82 = 7,360.72/x
  3. Step 3: Cross multiply
    13,328.80x = 18,393.82 × 7,360.72
  4. Step 4: Simplify right side
    13,328.80x = 135,391,758.75
  5. Step 5: Solve for x
    x = 135,391,758.75/13,328.80
  6. Step 6: Final answer
    x = 10,157.84

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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.