Home / 43,580.11-65,397.81-18,620.35

Finding the Fourth Proportional to 43,580.11, 65,397.81 and 18,620.35

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Solution

The fourth proportional to 43,580.11, 65,397.81 and 18,620.35 is: 27,942.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,580.11 : 65,397.81 = 18,620.35 : x
  2. Step 2: Convert to fraction form
    43,580.11/65,397.81 = 18,620.35/x
  3. Step 3: Cross multiply
    43,580.11x = 65,397.81 × 18,620.35
  4. Step 4: Simplify right side
    43,580.11x = 1,217,730,111.43
  5. Step 5: Solve for x
    x = 1,217,730,111.43/43,580.11
  6. Step 6: Final answer
    x = 27,942.34

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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.