Home / 43,665.06-65,442.81-18,675.78

Finding the Fourth Proportional to 43,665.06, 65,442.81 and 18,675.78

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Solution

The fourth proportional to 43,665.06, 65,442.81 and 18,675.78 is: 27,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,665.06 : 65,442.81 = 18,675.78 : x
  2. Step 2: Convert to fraction form
    43,665.06/65,442.81 = 18,675.78/x
  3. Step 3: Cross multiply
    43,665.06x = 65,442.81 × 18,675.78
  4. Step 4: Simplify right side
    43,665.06x = 1,222,195,522.14
  5. Step 5: Solve for x
    x = 1,222,195,522.14/43,665.06
  6. Step 6: Final answer
    x = 27,990.24

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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.