Home / 28,720.48-39,634.26-16,145.23

Finding the Fourth Proportional to 28,720.48, 39,634.26 and 16,145.23

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Solution

The fourth proportional to 28,720.48, 39,634.26 and 16,145.23 is: 22,280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.48 : 39,634.26 = 16,145.23 : x
  2. Step 2: Convert to fraction form
    28,720.48/39,634.26 = 16,145.23/x
  3. Step 3: Cross multiply
    28,720.48x = 39,634.26 × 16,145.23
  4. Step 4: Simplify right side
    28,720.48x = 639,904,243.58
  5. Step 5: Solve for x
    x = 639,904,243.58/28,720.48
  6. Step 6: Final answer
    x = 22,280.42

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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.