Home / 19,653.37-27,139.67-12,485.60

Finding the Fourth Proportional to 19,653.37, 27,139.67 and 12,485.60

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Solution

The fourth proportional to 19,653.37, 27,139.67 and 12,485.60 is: 17,241.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,653.37 : 27,139.67 = 12,485.60 : x
  2. Step 2: Convert to fraction form
    19,653.37/27,139.67 = 12,485.60/x
  3. Step 3: Cross multiply
    19,653.37x = 27,139.67 × 12,485.60
  4. Step 4: Simplify right side
    19,653.37x = 338,855,063.75
  5. Step 5: Solve for x
    x = 338,855,063.75/19,653.37
  6. Step 6: Final answer
    x = 17,241.58

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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.