Home / 11,131.53-15,391.05-9,730.26

Finding the Fourth Proportional to 11,131.53, 15,391.05 and 9,730.26

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Solution

The fourth proportional to 11,131.53, 15,391.05 and 9,730.26 is: 13,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.53 : 15,391.05 = 9,730.26 : x
  2. Step 2: Convert to fraction form
    11,131.53/15,391.05 = 9,730.26/x
  3. Step 3: Cross multiply
    11,131.53x = 15,391.05 × 9,730.26
  4. Step 4: Simplify right side
    11,131.53x = 149,758,918.17
  5. Step 5: Solve for x
    x = 149,758,918.17/11,131.53
  6. Step 6: Final answer
    x = 13,453.58

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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.