Home / 13,758.99-18,987.75-7,471.37

Finding the Fourth Proportional to 13,758.99, 18,987.75 and 7,471.37

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Solution

The fourth proportional to 13,758.99, 18,987.75 and 7,471.37 is: 10,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.99 : 18,987.75 = 7,471.37 : x
  2. Step 2: Convert to fraction form
    13,758.99/18,987.75 = 7,471.37/x
  3. Step 3: Cross multiply
    13,758.99x = 18,987.75 × 7,471.37
  4. Step 4: Simplify right side
    13,758.99x = 141,864,505.72
  5. Step 5: Solve for x
    x = 141,864,505.72/13,758.99
  6. Step 6: Final answer
    x = 10,310.68

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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.