Home / 27,991.58-38,628.26-15,416.32

Finding the Fourth Proportional to 27,991.58, 38,628.26 and 15,416.32

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Solution

The fourth proportional to 27,991.58, 38,628.26 and 15,416.32 is: 21,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.58 : 38,628.26 = 15,416.32 : x
  2. Step 2: Convert to fraction form
    27,991.58/38,628.26 = 15,416.32/x
  3. Step 3: Cross multiply
    27,991.58x = 38,628.26 × 15,416.32
  4. Step 4: Simplify right side
    27,991.58x = 595,505,617.20
  5. Step 5: Solve for x
    x = 595,505,617.20/27,991.58
  6. Step 6: Final answer
    x = 21,274.46

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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.