Home / 13,121.23-18,107.64-7,533.31

Finding the Fourth Proportional to 13,121.23, 18,107.64 and 7,533.31

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Solution

The fourth proportional to 13,121.23, 18,107.64 and 7,533.31 is: 10,396.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.23 : 18,107.64 = 7,533.31 : x
  2. Step 2: Convert to fraction form
    13,121.23/18,107.64 = 7,533.31/x
  3. Step 3: Cross multiply
    13,121.23x = 18,107.64 × 7,533.31
  4. Step 4: Simplify right side
    13,121.23x = 136,410,427.82
  5. Step 5: Solve for x
    x = 136,410,427.82/13,121.23
  6. Step 6: Final answer
    x = 10,396.16

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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.