Home / 21,634.13-29,848.11-12,072.47

Finding the Fourth Proportional to 21,634.13, 29,848.11 and 12,072.47

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Solution

The fourth proportional to 21,634.13, 29,848.11 and 12,072.47 is: 16,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,634.13 : 29,848.11 = 12,072.47 : x
  2. Step 2: Convert to fraction form
    21,634.13/29,848.11 = 12,072.47/x
  3. Step 3: Cross multiply
    21,634.13x = 29,848.11 × 12,072.47
  4. Step 4: Simplify right side
    21,634.13x = 360,340,412.53
  5. Step 5: Solve for x
    x = 360,340,412.53/21,634.13
  6. Step 6: Final answer
    x = 16,656.11

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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.