Home / 13,170.32-18,174.87-7,505.41

Finding the Fourth Proportional to 13,170.32, 18,174.87 and 7,505.41

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Solution

The fourth proportional to 13,170.32, 18,174.87 and 7,505.41 is: 10,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.32 : 18,174.87 = 7,505.41 : x
  2. Step 2: Convert to fraction form
    13,170.32/18,174.87 = 7,505.41/x
  3. Step 3: Cross multiply
    13,170.32x = 18,174.87 × 7,505.41
  4. Step 4: Simplify right side
    13,170.32x = 136,409,805.61
  5. Step 5: Solve for x
    x = 136,409,805.61/13,170.32
  6. Step 6: Final answer
    x = 10,357.36

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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.