Home / 21,241.14-29,313.81-11,809.50

Finding the Fourth Proportional to 21,241.14, 29,313.81 and 11,809.50

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Solution

The fourth proportional to 21,241.14, 29,313.81 and 11,809.50 is: 16,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.14 : 29,313.81 = 11,809.50 : x
  2. Step 2: Convert to fraction form
    21,241.14/29,313.81 = 11,809.50/x
  3. Step 3: Cross multiply
    21,241.14x = 29,313.81 × 11,809.50
  4. Step 4: Simplify right side
    21,241.14x = 346,181,439.20
  5. Step 5: Solve for x
    x = 346,181,439.20/21,241.14
  6. Step 6: Final answer
    x = 16,297.69

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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.