Home / 21,604-29,810.28-12,172.36

Finding the Fourth Proportional to 21,604, 29,810.28 and 12,172.36

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Solution

The fourth proportional to 21,604, 29,810.28 and 12,172.36 is: 16,796.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604 : 29,810.28 = 12,172.36 : x
  2. Step 2: Convert to fraction form
    21,604/29,810.28 = 12,172.36/x
  3. Step 3: Cross multiply
    21,604x = 29,810.28 × 12,172.36
  4. Step 4: Simplify right side
    21,604x = 362,861,459.86
  5. Step 5: Solve for x
    x = 362,861,459.86/21,604
  6. Step 6: Final answer
    x = 16,796.03

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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.