Home / 31,408.45-43,326.35-19,902.31

Finding the Fourth Proportional to 31,408.45, 43,326.35 and 19,902.31

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Solution

The fourth proportional to 31,408.45, 43,326.35 and 19,902.31 is: 27,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.45 : 43,326.35 = 19,902.31 : x
  2. Step 2: Convert to fraction form
    31,408.45/43,326.35 = 19,902.31/x
  3. Step 3: Cross multiply
    31,408.45x = 43,326.35 × 19,902.31
  4. Step 4: Simplify right side
    31,408.45x = 862,294,448.87
  5. Step 5: Solve for x
    x = 862,294,448.87/31,408.45
  6. Step 6: Final answer
    x = 27,454.22

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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.