Home / 28,187.82-38,900.46-15,612.54

Finding the Fourth Proportional to 28,187.82, 38,900.46 and 15,612.54

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Solution

The fourth proportional to 28,187.82, 38,900.46 and 15,612.54 is: 21,546.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.82 : 38,900.46 = 15,612.54 : x
  2. Step 2: Convert to fraction form
    28,187.82/38,900.46 = 15,612.54/x
  3. Step 3: Cross multiply
    28,187.82x = 38,900.46 × 15,612.54
  4. Step 4: Simplify right side
    28,187.82x = 607,334,987.77
  5. Step 5: Solve for x
    x = 607,334,987.77/28,187.82
  6. Step 6: Final answer
    x = 21,546.01

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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.