Home / 28,441.81-39,260.46-21,388.60

Finding the Fourth Proportional to 28,441.81, 39,260.46 and 21,388.60

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Solution

The fourth proportional to 28,441.81, 39,260.46 and 21,388.60 is: 29,524.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,441.81 : 39,260.46 = 21,388.60 : x
  2. Step 2: Convert to fraction form
    28,441.81/39,260.46 = 21,388.60/x
  3. Step 3: Cross multiply
    28,441.81x = 39,260.46 × 21,388.60
  4. Step 4: Simplify right side
    28,441.81x = 839,726,274.76
  5. Step 5: Solve for x
    x = 839,726,274.76/28,441.81
  6. Step 6: Final answer
    x = 29,524.36

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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.