Home / 19,420.41-29,112.16-12,380.67

Finding the Fourth Proportional to 19,420.41, 29,112.16 and 12,380.67

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Solution

The fourth proportional to 19,420.41, 29,112.16 and 12,380.67 is: 18,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.41 : 29,112.16 = 12,380.67 : x
  2. Step 2: Convert to fraction form
    19,420.41/29,112.16 = 12,380.67/x
  3. Step 3: Cross multiply
    19,420.41x = 29,112.16 × 12,380.67
  4. Step 4: Simplify right side
    19,420.41x = 360,427,900.39
  5. Step 5: Solve for x
    x = 360,427,900.39/19,420.41
  6. Step 6: Final answer
    x = 18,559.23

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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.