Home / 19,662.06-27,138.60-13,290.60

Finding the Fourth Proportional to 19,662.06, 27,138.60 and 13,290.60

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Solution

The fourth proportional to 19,662.06, 27,138.60 and 13,290.60 is: 18,344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.06 : 27,138.60 = 13,290.60 : x
  2. Step 2: Convert to fraction form
    19,662.06/27,138.60 = 13,290.60/x
  3. Step 3: Cross multiply
    19,662.06x = 27,138.60 × 13,290.60
  4. Step 4: Simplify right side
    19,662.06x = 360,688,277.16
  5. Step 5: Solve for x
    x = 360,688,277.16/19,662.06
  6. Step 6: Final answer
    x = 18,344.38

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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.