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Finding the Fourth Proportional to 25,783.70, 35,578.73 and 15,028.79

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Solution

The fourth proportional to 25,783.70, 35,578.73 and 15,028.79 is: 20,738.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,783.70 : 35,578.73 = 15,028.79 : x
  2. Step 2: Convert to fraction form
    25,783.70/35,578.73 = 15,028.79/x
  3. Step 3: Cross multiply
    25,783.70x = 35,578.73 × 15,028.79
  4. Step 4: Simplify right side
    25,783.70x = 534,705,300.31
  5. Step 5: Solve for x
    x = 534,705,300.31/25,783.70
  6. Step 6: Final answer
    x = 20,738.11

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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.