Home / 28,298.32-42,453.62-8,578.39

Finding the Fourth Proportional to 28,298.32, 42,453.62 and 8,578.39

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Solution

The fourth proportional to 28,298.32, 42,453.62 and 8,578.39 is: 12,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,298.32 : 42,453.62 = 8,578.39 : x
  2. Step 2: Convert to fraction form
    28,298.32/42,453.62 = 8,578.39/x
  3. Step 3: Cross multiply
    28,298.32x = 42,453.62 × 8,578.39
  4. Step 4: Simplify right side
    28,298.32x = 364,183,709.27
  5. Step 5: Solve for x
    x = 364,183,709.27/28,298.32
  6. Step 6: Final answer
    x = 12,869.45

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1.5x scale

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.