Home / 13,406.88-20,112.15-4,640.67

Finding the Fourth Proportional to 13,406.88, 20,112.15 and 4,640.67

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Solution

The fourth proportional to 13,406.88, 20,112.15 and 4,640.67 is: 6,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.88 : 20,112.15 = 4,640.67 : x
  2. Step 2: Convert to fraction form
    13,406.88/20,112.15 = 4,640.67/x
  3. Step 3: Cross multiply
    13,406.88x = 20,112.15 × 4,640.67
  4. Step 4: Simplify right side
    13,406.88x = 93,333,851.14
  5. Step 5: Solve for x
    x = 93,333,851.14/13,406.88
  6. Step 6: Final answer
    x = 6,961.64

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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.