Home / 21,163.66-29,191.88-13,598.06

Finding the Fourth Proportional to 21,163.66, 29,191.88 and 13,598.06

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Solution

The fourth proportional to 21,163.66, 29,191.88 and 13,598.06 is: 18,756.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.66 : 29,191.88 = 13,598.06 : x
  2. Step 2: Convert to fraction form
    21,163.66/29,191.88 = 13,598.06/x
  3. Step 3: Cross multiply
    21,163.66x = 29,191.88 × 13,598.06
  4. Step 4: Simplify right side
    21,163.66x = 396,952,823.79
  5. Step 5: Solve for x
    x = 396,952,823.79/21,163.66
  6. Step 6: Final answer
    x = 18,756.34

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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.