Home / 31,448.58-43,409.70-19,518.90

Finding the Fourth Proportional to 31,448.58, 43,409.70 and 19,518.90

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Solution

The fourth proportional to 31,448.58, 43,409.70 and 19,518.90 is: 26,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.58 : 43,409.70 = 19,518.90 : x
  2. Step 2: Convert to fraction form
    31,448.58/43,409.70 = 19,518.90/x
  3. Step 3: Cross multiply
    31,448.58x = 43,409.70 × 19,518.90
  4. Step 4: Simplify right side
    31,448.58x = 847,309,593.33
  5. Step 5: Solve for x
    x = 847,309,593.33/31,448.58
  6. Step 6: Final answer
    x = 26,942.70

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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.