Home / 9,621.42-13,285.08-7,379.75

Finding the Fourth Proportional to 9,621.42, 13,285.08 and 7,379.75

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Solution

The fourth proportional to 9,621.42, 13,285.08 and 7,379.75 is: 10,189.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.42 : 13,285.08 = 7,379.75 : x
  2. Step 2: Convert to fraction form
    9,621.42/13,285.08 = 7,379.75/x
  3. Step 3: Cross multiply
    9,621.42x = 13,285.08 × 7,379.75
  4. Step 4: Simplify right side
    9,621.42x = 98,040,502.70
  5. Step 5: Solve for x
    x = 98,040,502.70/9,621.42
  6. Step 6: Final answer
    x = 10,189.82

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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.