Home / 13,880.20-19,110.18-11,236.36

Finding the Fourth Proportional to 13,880.20, 19,110.18 and 11,236.36

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Solution

The fourth proportional to 13,880.20, 19,110.18 and 11,236.36 is: 15,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.20 : 19,110.18 = 11,236.36 : x
  2. Step 2: Convert to fraction form
    13,880.20/19,110.18 = 11,236.36/x
  3. Step 3: Cross multiply
    13,880.20x = 19,110.18 × 11,236.36
  4. Step 4: Simplify right side
    13,880.20x = 214,728,862.14
  5. Step 5: Solve for x
    x = 214,728,862.14/13,880.20
  6. Step 6: Final answer
    x = 15,470.16

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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.