Home / 31,435.67-43,379.03-18,688.19

Finding the Fourth Proportional to 31,435.67, 43,379.03 and 18,688.19

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Solution

The fourth proportional to 31,435.67, 43,379.03 and 18,688.19 is: 25,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.67 : 43,379.03 = 18,688.19 : x
  2. Step 2: Convert to fraction form
    31,435.67/43,379.03 = 18,688.19/x
  3. Step 3: Cross multiply
    31,435.67x = 43,379.03 × 18,688.19
  4. Step 4: Simplify right side
    31,435.67x = 810,675,244.32
  5. Step 5: Solve for x
    x = 810,675,244.32/31,435.67
  6. Step 6: Final answer
    x = 25,788.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.