Home / 21,615.47-29,829.80-12,184.03

Finding the Fourth Proportional to 21,615.47, 29,829.80 and 12,184.03

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Solution

The fourth proportional to 21,615.47, 29,829.80 and 12,184.03 is: 16,814.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.47 : 29,829.80 = 12,184.03 : x
  2. Step 2: Convert to fraction form
    21,615.47/29,829.80 = 12,184.03/x
  3. Step 3: Cross multiply
    21,615.47x = 29,829.80 × 12,184.03
  4. Step 4: Simplify right side
    21,615.47x = 363,447,245.84
  5. Step 5: Solve for x
    x = 363,447,245.84/21,615.47
  6. Step 6: Final answer
    x = 16,814.22

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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.