Home / 21,636.66-29,854.53-13,673.28

Finding the Fourth Proportional to 21,636.66, 29,854.53 and 13,673.28

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Solution

The fourth proportional to 21,636.66, 29,854.53 and 13,673.28 is: 18,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.66 : 29,854.53 = 13,673.28 : x
  2. Step 2: Convert to fraction form
    21,636.66/29,854.53 = 13,673.28/x
  3. Step 3: Cross multiply
    21,636.66x = 29,854.53 × 13,673.28
  4. Step 4: Simplify right side
    21,636.66x = 408,209,347.96
  5. Step 5: Solve for x
    x = 408,209,347.96/21,636.66
  6. Step 6: Final answer
    x = 18,866.56

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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.