Home / 31,408.90-43,347.97-18,662.19

Finding the Fourth Proportional to 31,408.90, 43,347.97 and 18,662.19

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Solution

The fourth proportional to 31,408.90, 43,347.97 and 18,662.19 is: 25,756.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.90 : 43,347.97 = 18,662.19 : x
  2. Step 2: Convert to fraction form
    31,408.90/43,347.97 = 18,662.19/x
  3. Step 3: Cross multiply
    31,408.90x = 43,347.97 × 18,662.19
  4. Step 4: Simplify right side
    31,408.90x = 808,968,052.25
  5. Step 5: Solve for x
    x = 808,968,052.25/31,408.90
  6. Step 6: Final answer
    x = 25,756.01

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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.