Home / 11,322.40-15,622.96-7,072.72

Finding the Fourth Proportional to 11,322.40, 15,622.96 and 7,072.72

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Solution

The fourth proportional to 11,322.40, 15,622.96 and 7,072.72 is: 9,759.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,322.40 : 15,622.96 = 7,072.72 : x
  2. Step 2: Convert to fraction form
    11,322.40/15,622.96 = 7,072.72/x
  3. Step 3: Cross multiply
    11,322.40x = 15,622.96 × 7,072.72
  4. Step 4: Simplify right side
    11,322.40x = 110,496,821.65
  5. Step 5: Solve for x
    x = 110,496,821.65/11,322.40
  6. Step 6: Final answer
    x = 9,759.13

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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.