Home / 20,115.64-27,776.16-13,054.12

Finding the Fourth Proportional to 20,115.64, 27,776.16 and 13,054.12

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Solution

The fourth proportional to 20,115.64, 27,776.16 and 13,054.12 is: 18,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.64 : 27,776.16 = 13,054.12 : x
  2. Step 2: Convert to fraction form
    20,115.64/27,776.16 = 13,054.12/x
  3. Step 3: Cross multiply
    20,115.64x = 27,776.16 × 13,054.12
  4. Step 4: Simplify right side
    20,115.64x = 362,593,325.78
  5. Step 5: Solve for x
    x = 362,593,325.78/20,115.64
  6. Step 6: Final answer
    x = 18,025.44

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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.