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Finding the Fourth Proportional to 43,969.16, 65,929.14 and 18,993.62

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Solution

The fourth proportional to 43,969.16, 65,929.14 and 18,993.62 is: 28,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,969.16 : 65,929.14 = 18,993.62 : x
  2. Step 2: Convert to fraction form
    43,969.16/65,929.14 = 18,993.62/x
  3. Step 3: Cross multiply
    43,969.16x = 65,929.14 × 18,993.62
  4. Step 4: Simplify right side
    43,969.16x = 1,252,233,032.09
  5. Step 5: Solve for x
    x = 1,252,233,032.09/43,969.16
  6. Step 6: Final answer
    x = 28,479.80

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1.5x scale

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.