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Finding the Fourth Proportional to 21,968.77, 32,954.06 and 6,386.39

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Solution

The fourth proportional to 21,968.77, 32,954.06 and 6,386.39 is: 9,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.77 : 32,954.06 = 6,386.39 : x
  2. Step 2: Convert to fraction form
    21,968.77/32,954.06 = 6,386.39/x
  3. Step 3: Cross multiply
    21,968.77x = 32,954.06 × 6,386.39
  4. Step 4: Simplify right side
    21,968.77x = 210,457,577.59
  5. Step 5: Solve for x
    x = 210,457,577.59/21,968.77
  6. Step 6: Final answer
    x = 9,579.85

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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.