Home / 13,074.80-18,057.52-11,388.40

Finding the Fourth Proportional to 13,074.80, 18,057.52 and 11,388.40

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Solution

The fourth proportional to 13,074.80, 18,057.52 and 11,388.40 is: 15,728.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.80 : 18,057.52 = 11,388.40 : x
  2. Step 2: Convert to fraction form
    13,074.80/18,057.52 = 11,388.40/x
  3. Step 3: Cross multiply
    13,074.80x = 18,057.52 × 11,388.40
  4. Step 4: Simplify right side
    13,074.80x = 205,646,260.77
  5. Step 5: Solve for x
    x = 205,646,260.77/13,074.80
  6. Step 6: Final answer
    x = 15,728.44

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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.