Home / 21,102.85-29,101.04-13,548.01

Finding the Fourth Proportional to 21,102.85, 29,101.04 and 13,548.01

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Solution

The fourth proportional to 21,102.85, 29,101.04 and 13,548.01 is: 18,682.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.85 : 29,101.04 = 13,548.01 : x
  2. Step 2: Convert to fraction form
    21,102.85/29,101.04 = 13,548.01/x
  3. Step 3: Cross multiply
    21,102.85x = 29,101.04 × 13,548.01
  4. Step 4: Simplify right side
    21,102.85x = 394,261,113.19
  5. Step 5: Solve for x
    x = 394,261,113.19/21,102.85
  6. Step 6: Final answer
    x = 18,682.84

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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.