Home / 13,643.66-20,344.99-11,984.57

Finding the Fourth Proportional to 13,643.66, 20,344.99 and 11,984.57

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Solution

The fourth proportional to 13,643.66, 20,344.99 and 11,984.57 is: 17,871.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.66 : 20,344.99 = 11,984.57 : x
  2. Step 2: Convert to fraction form
    13,643.66/20,344.99 = 11,984.57/x
  3. Step 3: Cross multiply
    13,643.66x = 20,344.99 × 11,984.57
  4. Step 4: Simplify right side
    13,643.66x = 243,825,956.80
  5. Step 5: Solve for x
    x = 243,825,956.80/13,643.66
  6. Step 6: Final answer
    x = 17,871.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.