Home / 28,338.38-42,509.32-8,618.39

Finding the Fourth Proportional to 28,338.38, 42,509.32 and 8,618.39

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Solution

The fourth proportional to 28,338.38, 42,509.32 and 8,618.39 is: 12,928.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.38 : 42,509.32 = 8,618.39 : x
  2. Step 2: Convert to fraction form
    28,338.38/42,509.32 = 8,618.39/x
  3. Step 3: Cross multiply
    28,338.38x = 42,509.32 × 8,618.39
  4. Step 4: Simplify right side
    28,338.38x = 366,361,664.30
  5. Step 5: Solve for x
    x = 366,361,664.30/28,338.38
  6. Step 6: Final answer
    x = 12,928.11

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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.