Home / 10,015.57-15,022.21-2,620.75

Finding the Fourth Proportional to 10,015.57, 15,022.21 and 2,620.75

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Solution

The fourth proportional to 10,015.57, 15,022.21 and 2,620.75 is: 3,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.57 : 15,022.21 = 2,620.75 : x
  2. Step 2: Convert to fraction form
    10,015.57/15,022.21 = 2,620.75/x
  3. Step 3: Cross multiply
    10,015.57x = 15,022.21 × 2,620.75
  4. Step 4: Simplify right side
    10,015.57x = 39,369,368.64
  5. Step 5: Solve for x
    x = 39,369,368.64/10,015.57
  6. Step 6: Final answer
    x = 3,930.82

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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.