Home / 13,821.82-19,054.80-11,688.79

Finding the Fourth Proportional to 13,821.82, 19,054.80 and 11,688.79

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Solution

The fourth proportional to 13,821.82, 19,054.80 and 11,688.79 is: 16,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.82 : 19,054.80 = 11,688.79 : x
  2. Step 2: Convert to fraction form
    13,821.82/19,054.80 = 11,688.79/x
  3. Step 3: Cross multiply
    13,821.82x = 19,054.80 × 11,688.79
  4. Step 4: Simplify right side
    13,821.82x = 222,727,555.69
  5. Step 5: Solve for x
    x = 222,727,555.69/13,821.82
  6. Step 6: Final answer
    x = 16,114.20

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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.