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Finding the Fourth Proportional to 43,510, 65,265.06 and 18,886

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Solution

The fourth proportional to 43,510, 65,265.06 and 18,886 is: 28,329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,510 : 65,265.06 = 18,886 : x
  2. Step 2: Convert to fraction form
    43,510/65,265.06 = 18,886/x
  3. Step 3: Cross multiply
    43,510x = 65,265.06 × 18,886
  4. Step 4: Simplify right side
    43,510x = 1,232,595,923.16
  5. Step 5: Solve for x
    x = 1,232,595,923.16/43,510
  6. Step 6: Final answer
    x = 28,329.03

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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.