Home / 28,112.54-42,175.73-19,808.77

Finding the Fourth Proportional to 28,112.54, 42,175.73 and 19,808.77

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Solution

The fourth proportional to 28,112.54, 42,175.73 and 19,808.77 is: 29,718.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.54 : 42,175.73 = 19,808.77 : x
  2. Step 2: Convert to fraction form
    28,112.54/42,175.73 = 19,808.77/x
  3. Step 3: Cross multiply
    28,112.54x = 42,175.73 × 19,808.77
  4. Step 4: Simplify right side
    28,112.54x = 835,449,335.15
  5. Step 5: Solve for x
    x = 835,449,335.15/28,112.54
  6. Step 6: Final answer
    x = 29,718.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.