Home / 31,455.56-43,408.31-17,115.81

Finding the Fourth Proportional to 31,455.56, 43,408.31 and 17,115.81

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Solution

The fourth proportional to 31,455.56, 43,408.31 and 17,115.81 is: 23,619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.56 : 43,408.31 = 17,115.81 : x
  2. Step 2: Convert to fraction form
    31,455.56/43,408.31 = 17,115.81/x
  3. Step 3: Cross multiply
    31,455.56x = 43,408.31 × 17,115.81
  4. Step 4: Simplify right side
    31,455.56x = 742,968,300.80
  5. Step 5: Solve for x
    x = 742,968,300.80/31,455.56
  6. Step 6: Final answer
    x = 23,619.62

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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.