Home / 20,907.41-31,377.20-12,148.47

Finding the Fourth Proportional to 20,907.41, 31,377.20 and 12,148.47

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Solution

The fourth proportional to 20,907.41, 31,377.20 and 12,148.47 is: 18,232.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.41 : 31,377.20 = 12,148.47 : x
  2. Step 2: Convert to fraction form
    20,907.41/31,377.20 = 12,148.47/x
  3. Step 3: Cross multiply
    20,907.41x = 31,377.20 × 12,148.47
  4. Step 4: Simplify right side
    20,907.41x = 381,184,912.14
  5. Step 5: Solve for x
    x = 381,184,912.14/20,907.41
  6. Step 6: Final answer
    x = 18,232.05

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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.