Home / 21,162.18-29,202.48-11,730

Finding the Fourth Proportional to 21,162.18, 29,202.48 and 11,730

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Solution

The fourth proportional to 21,162.18, 29,202.48 and 11,730 is: 16,186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.18 : 29,202.48 = 11,730 : x
  2. Step 2: Convert to fraction form
    21,162.18/29,202.48 = 11,730/x
  3. Step 3: Cross multiply
    21,162.18x = 29,202.48 × 11,730
  4. Step 4: Simplify right side
    21,162.18x = 342,545,090.40
  5. Step 5: Solve for x
    x = 342,545,090.40/21,162.18
  6. Step 6: Final answer
    x = 16,186.66

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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.