Home / 31,448.82-43,417.35-20,852.85

Finding the Fourth Proportional to 31,448.82, 43,417.35 and 20,852.85

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Solution

The fourth proportional to 31,448.82, 43,417.35 and 20,852.85 is: 28,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.82 : 43,417.35 = 20,852.85 : x
  2. Step 2: Convert to fraction form
    31,448.82/43,417.35 = 20,852.85/x
  3. Step 3: Cross multiply
    31,448.82x = 43,417.35 × 20,852.85
  4. Step 4: Simplify right side
    31,448.82x = 905,375,486.95
  5. Step 5: Solve for x
    x = 905,375,486.95/31,448.82
  6. Step 6: Final answer
    x = 28,788.85

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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.