Home / 28,653.71-42,997.31-12,012.47

Finding the Fourth Proportional to 28,653.71, 42,997.31 and 12,012.47

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Solution

The fourth proportional to 28,653.71, 42,997.31 and 12,012.47 is: 18,025.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.71 : 42,997.31 = 12,012.47 : x
  2. Step 2: Convert to fraction form
    28,653.71/42,997.31 = 12,012.47/x
  3. Step 3: Cross multiply
    28,653.71x = 42,997.31 × 12,012.47
  4. Step 4: Simplify right side
    28,653.71x = 516,503,621.41
  5. Step 5: Solve for x
    x = 516,503,621.41/28,653.71
  6. Step 6: Final answer
    x = 18,025.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.