Home / 31,317.21-43,220.48-17,172.81

Finding the Fourth Proportional to 31,317.21, 43,220.48 and 17,172.81

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Solution

The fourth proportional to 31,317.21, 43,220.48 and 17,172.81 is: 23,699.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,317.21 : 43,220.48 = 17,172.81 : x
  2. Step 2: Convert to fraction form
    31,317.21/43,220.48 = 17,172.81/x
  3. Step 3: Cross multiply
    31,317.21x = 43,220.48 × 17,172.81
  4. Step 4: Simplify right side
    31,317.21x = 742,217,005.28
  5. Step 5: Solve for x
    x = 742,217,005.28/31,317.21
  6. Step 6: Final answer
    x = 23,699.97

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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.