Home / 28,519.45-39,356.61-16,422.31

Finding the Fourth Proportional to 28,519.45, 39,356.61 and 16,422.31

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Solution

The fourth proportional to 28,519.45, 39,356.61 and 16,422.31 is: 22,662.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.45 : 39,356.61 = 16,422.31 : x
  2. Step 2: Convert to fraction form
    28,519.45/39,356.61 = 16,422.31/x
  3. Step 3: Cross multiply
    28,519.45x = 39,356.61 × 16,422.31
  4. Step 4: Simplify right side
    28,519.45x = 646,326,449.97
  5. Step 5: Solve for x
    x = 646,326,449.97/28,519.45
  6. Step 6: Final answer
    x = 22,662.65

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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.