Home / 28,330.36-39,121.99-18,276.23

Finding the Fourth Proportional to 28,330.36, 39,121.99 and 18,276.23

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Solution

The fourth proportional to 28,330.36, 39,121.99 and 18,276.23 is: 25,238.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.36 : 39,121.99 = 18,276.23 : x
  2. Step 2: Convert to fraction form
    28,330.36/39,121.99 = 18,276.23/x
  3. Step 3: Cross multiply
    28,330.36x = 39,121.99 × 18,276.23
  4. Step 4: Simplify right side
    28,330.36x = 715,002,539.41
  5. Step 5: Solve for x
    x = 715,002,539.41/28,330.36
  6. Step 6: Final answer
    x = 25,238.03

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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.