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Finding the Fourth Proportional to 19,383.48, 29,088.12 and 7,071.48

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Solution

The fourth proportional to 19,383.48, 29,088.12 and 7,071.48 is: 10,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,383.48 : 29,088.12 = 7,071.48 : x
  2. Step 2: Convert to fraction form
    19,383.48/29,088.12 = 7,071.48/x
  3. Step 3: Cross multiply
    19,383.48x = 29,088.12 × 7,071.48
  4. Step 4: Simplify right side
    19,383.48x = 205,696,058.82
  5. Step 5: Solve for x
    x = 205,696,058.82/19,383.48
  6. Step 6: Final answer
    x = 10,611.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.