Home / 13,153.80-19,730.70-11,512.20

Finding the Fourth Proportional to 13,153.80, 19,730.70 and 11,512.20

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Solution

The fourth proportional to 13,153.80, 19,730.70 and 11,512.20 is: 17,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.80 : 19,730.70 = 11,512.20 : x
  2. Step 2: Convert to fraction form
    13,153.80/19,730.70 = 11,512.20/x
  3. Step 3: Cross multiply
    13,153.80x = 19,730.70 × 11,512.20
  4. Step 4: Simplify right side
    13,153.80x = 227,143,764.54
  5. Step 5: Solve for x
    x = 227,143,764.54/13,153.80
  6. Step 6: Final answer
    x = 17,268.30

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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.