Home / 28,910.44-39,903.08-18,821.32

Finding the Fourth Proportional to 28,910.44, 39,903.08 and 18,821.32

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Solution

The fourth proportional to 28,910.44, 39,903.08 and 18,821.32 is: 25,977.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.44 : 39,903.08 = 18,821.32 : x
  2. Step 2: Convert to fraction form
    28,910.44/39,903.08 = 18,821.32/x
  3. Step 3: Cross multiply
    28,910.44x = 39,903.08 × 18,821.32
  4. Step 4: Simplify right side
    28,910.44x = 751,028,637.67
  5. Step 5: Solve for x
    x = 751,028,637.67/28,910.44
  6. Step 6: Final answer
    x = 25,977.77

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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.