Home / 20,112.64-27,772.02-13,051.12

Finding the Fourth Proportional to 20,112.64, 27,772.02 and 13,051.12

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Solution

The fourth proportional to 20,112.64, 27,772.02 and 13,051.12 is: 18,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.64 : 27,772.02 = 13,051.12 : x
  2. Step 2: Convert to fraction form
    20,112.64/27,772.02 = 13,051.12/x
  3. Step 3: Cross multiply
    20,112.64x = 27,772.02 × 13,051.12
  4. Step 4: Simplify right side
    20,112.64x = 362,455,965.66
  5. Step 5: Solve for x
    x = 362,455,965.66/20,112.64
  6. Step 6: Final answer
    x = 18,021.30

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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.