Home / 13,980.36-20,977.80-13,173.60

Finding the Fourth Proportional to 13,980.36, 20,977.80 and 13,173.60

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Solution

The fourth proportional to 13,980.36, 20,977.80 and 13,173.60 is: 19,767.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.36 : 20,977.80 = 13,173.60 : x
  2. Step 2: Convert to fraction form
    13,980.36/20,977.80 = 13,173.60/x
  3. Step 3: Cross multiply
    13,980.36x = 20,977.80 × 13,173.60
  4. Step 4: Simplify right side
    13,980.36x = 276,353,146.08
  5. Step 5: Solve for x
    x = 276,353,146.08/13,980.36
  6. Step 6: Final answer
    x = 19,767.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.