Home / 15,155.42-20,907.23-11,775.09

Finding the Fourth Proportional to 15,155.42, 20,907.23 and 11,775.09

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Solution

The fourth proportional to 15,155.42, 20,907.23 and 11,775.09 is: 16,243.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.42 : 20,907.23 = 11,775.09 : x
  2. Step 2: Convert to fraction form
    15,155.42/20,907.23 = 11,775.09/x
  3. Step 3: Cross multiply
    15,155.42x = 20,907.23 × 11,775.09
  4. Step 4: Simplify right side
    15,155.42x = 246,184,456.03
  5. Step 5: Solve for x
    x = 246,184,456.03/15,155.42
  6. Step 6: Final answer
    x = 16,243.99

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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.