Home / 13,245.62-18,277.90-7,579.07

Finding the Fourth Proportional to 13,245.62, 18,277.90 and 7,579.07

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Solution

The fourth proportional to 13,245.62, 18,277.90 and 7,579.07 is: 10,458.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.62 : 18,277.90 = 7,579.07 : x
  2. Step 2: Convert to fraction form
    13,245.62/18,277.90 = 7,579.07/x
  3. Step 3: Cross multiply
    13,245.62x = 18,277.90 × 7,579.07
  4. Step 4: Simplify right side
    13,245.62x = 138,529,373.22
  5. Step 5: Solve for x
    x = 138,529,373.22/13,245.62
  6. Step 6: Final answer
    x = 10,458.51

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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.