Home / 13,447.82-18,558.92-7,480.05

Finding the Fourth Proportional to 13,447.82, 18,558.92 and 7,480.05

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Solution

The fourth proportional to 13,447.82, 18,558.92 and 7,480.05 is: 10,322.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.82 : 18,558.92 = 7,480.05 : x
  2. Step 2: Convert to fraction form
    13,447.82/18,558.92 = 7,480.05/x
  3. Step 3: Cross multiply
    13,447.82x = 18,558.92 × 7,480.05
  4. Step 4: Simplify right side
    13,447.82x = 138,821,598.65
  5. Step 5: Solve for x
    x = 138,821,598.65/13,447.82
  6. Step 6: Final answer
    x = 10,322.98

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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.