Home / 9,899.56-13,661.39-5,920.67

Finding the Fourth Proportional to 9,899.56, 13,661.39 and 5,920.67

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Solution

The fourth proportional to 9,899.56, 13,661.39 and 5,920.67 is: 8,170.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,899.56 : 13,661.39 = 5,920.67 : x
  2. Step 2: Convert to fraction form
    9,899.56/13,661.39 = 5,920.67/x
  3. Step 3: Cross multiply
    9,899.56x = 13,661.39 × 5,920.67
  4. Step 4: Simplify right side
    9,899.56x = 80,884,542.65
  5. Step 5: Solve for x
    x = 80,884,542.65/9,899.56
  6. Step 6: Final answer
    x = 8,170.52

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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.