Home / 21,664.90-29,887.21-13,594.53

Finding the Fourth Proportional to 21,664.90, 29,887.21 and 13,594.53

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Solution

The fourth proportional to 21,664.90, 29,887.21 and 13,594.53 is: 18,753.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.90 : 29,887.21 = 13,594.53 : x
  2. Step 2: Convert to fraction form
    21,664.90/29,887.21 = 13,594.53/x
  3. Step 3: Cross multiply
    21,664.90x = 29,887.21 × 13,594.53
  4. Step 4: Simplify right side
    21,664.90x = 406,302,703.48
  5. Step 5: Solve for x
    x = 406,302,703.48/21,664.90
  6. Step 6: Final answer
    x = 18,753.96

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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.