Home / 20,712.72-30,994.28-17,825.84

Finding the Fourth Proportional to 20,712.72, 30,994.28 and 17,825.84

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Solution

The fourth proportional to 20,712.72, 30,994.28 and 17,825.84 is: 26,674.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.72 : 30,994.28 = 17,825.84 : x
  2. Step 2: Convert to fraction form
    20,712.72/30,994.28 = 17,825.84/x
  3. Step 3: Cross multiply
    20,712.72x = 30,994.28 × 17,825.84
  4. Step 4: Simplify right side
    20,712.72x = 552,499,076.20
  5. Step 5: Solve for x
    x = 552,499,076.20/20,712.72
  6. Step 6: Final answer
    x = 26,674.39

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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.