Home / 28,727.21-39,643.07-15,980.24

Finding the Fourth Proportional to 28,727.21, 39,643.07 and 15,980.24

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Solution

The fourth proportional to 28,727.21, 39,643.07 and 15,980.24 is: 22,052.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,727.21 : 39,643.07 = 15,980.24 : x
  2. Step 2: Convert to fraction form
    28,727.21/39,643.07 = 15,980.24/x
  3. Step 3: Cross multiply
    28,727.21x = 39,643.07 × 15,980.24
  4. Step 4: Simplify right side
    28,727.21x = 633,505,494.82
  5. Step 5: Solve for x
    x = 633,505,494.82/28,727.21
  6. Step 6: Final answer
    x = 22,052.46

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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.