Home / 20,968.20-28,933.74-12,015.18

Finding the Fourth Proportional to 20,968.20, 28,933.74 and 12,015.18

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Solution

The fourth proportional to 20,968.20, 28,933.74 and 12,015.18 is: 16,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.20 : 28,933.74 = 12,015.18 : x
  2. Step 2: Convert to fraction form
    20,968.20/28,933.74 = 12,015.18/x
  3. Step 3: Cross multiply
    20,968.20x = 28,933.74 × 12,015.18
  4. Step 4: Simplify right side
    20,968.20x = 347,644,094.17
  5. Step 5: Solve for x
    x = 347,644,094.17/20,968.20
  6. Step 6: Final answer
    x = 16,579.59

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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.