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Finding the Fourth Proportional to 39,460, 59,219.22 and 18,683.56

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Solution

The fourth proportional to 39,460, 59,219.22 and 18,683.56 is: 28,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,460 : 59,219.22 = 18,683.56 : x
  2. Step 2: Convert to fraction form
    39,460/59,219.22 = 18,683.56/x
  3. Step 3: Cross multiply
    39,460x = 59,219.22 × 18,683.56
  4. Step 4: Simplify right side
    39,460x = 1,106,425,850.02
  5. Step 5: Solve for x
    x = 1,106,425,850.02/39,460
  6. Step 6: Final answer
    x = 28,039.18

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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.