Home / 13,480.55-20,238.65-11,518.75

Finding the Fourth Proportional to 13,480.55, 20,238.65 and 11,518.75

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Solution

The fourth proportional to 13,480.55, 20,238.65 and 11,518.75 is: 17,293.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.55 : 20,238.65 = 11,518.75 : x
  2. Step 2: Convert to fraction form
    13,480.55/20,238.65 = 11,518.75/x
  3. Step 3: Cross multiply
    13,480.55x = 20,238.65 × 11,518.75
  4. Step 4: Simplify right side
    13,480.55x = 233,123,949.69
  5. Step 5: Solve for x
    x = 233,123,949.69/13,480.55
  6. Step 6: Final answer
    x = 17,293.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.