Home / 13,054.88-18,020.40-7,469.12

Finding the Fourth Proportional to 13,054.88, 18,020.40 and 7,469.12

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Solution

The fourth proportional to 13,054.88, 18,020.40 and 7,469.12 is: 10,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,054.88 : 18,020.40 = 7,469.12 : x
  2. Step 2: Convert to fraction form
    13,054.88/18,020.40 = 7,469.12/x
  3. Step 3: Cross multiply
    13,054.88x = 18,020.40 × 7,469.12
  4. Step 4: Simplify right side
    13,054.88x = 134,596,530.05
  5. Step 5: Solve for x
    x = 134,596,530.05/13,054.88
  6. Step 6: Final answer
    x = 10,310.05

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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.