Home / 13,977.64-20,959.24-4,115.64

Finding the Fourth Proportional to 13,977.64, 20,959.24 and 4,115.64

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Solution

The fourth proportional to 13,977.64, 20,959.24 and 4,115.64 is: 6,171.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.64 : 20,959.24 = 4,115.64 : x
  2. Step 2: Convert to fraction form
    13,977.64/20,959.24 = 4,115.64/x
  3. Step 3: Cross multiply
    13,977.64x = 20,959.24 × 4,115.64
  4. Step 4: Simplify right side
    13,977.64x = 86,260,686.51
  5. Step 5: Solve for x
    x = 86,260,686.51/13,977.64
  6. Step 6: Final answer
    x = 6,171.33

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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.