Home / 13,439.99-18,540.73-11,573.75

Finding the Fourth Proportional to 13,439.99, 18,540.73 and 11,573.75

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Solution

The fourth proportional to 13,439.99, 18,540.73 and 11,573.75 is: 15,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.99 : 18,540.73 = 11,573.75 : x
  2. Step 2: Convert to fraction form
    13,439.99/18,540.73 = 11,573.75/x
  3. Step 3: Cross multiply
    13,439.99x = 18,540.73 × 11,573.75
  4. Step 4: Simplify right side
    13,439.99x = 214,585,773.84
  5. Step 5: Solve for x
    x = 214,585,773.84/13,439.99
  6. Step 6: Final answer
    x = 15,966.22

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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.