Home / 19,917.36-27,485.64-11,533.68

Finding the Fourth Proportional to 19,917.36, 27,485.64 and 11,533.68

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Solution

The fourth proportional to 19,917.36, 27,485.64 and 11,533.68 is: 15,916.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.36 : 27,485.64 = 11,533.68 : x
  2. Step 2: Convert to fraction form
    19,917.36/27,485.64 = 11,533.68/x
  3. Step 3: Cross multiply
    19,917.36x = 27,485.64 × 11,533.68
  4. Step 4: Simplify right side
    19,917.36x = 317,010,576.36
  5. Step 5: Solve for x
    x = 317,010,576.36/19,917.36
  6. Step 6: Final answer
    x = 15,916.29

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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.