Home / 28,878.86-43,322.70-7,819.58

Finding the Fourth Proportional to 28,878.86, 43,322.70 and 7,819.58

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Solution

The fourth proportional to 28,878.86, 43,322.70 and 7,819.58 is: 11,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.86 : 43,322.70 = 7,819.58 : x
  2. Step 2: Convert to fraction form
    28,878.86/43,322.70 = 7,819.58/x
  3. Step 3: Cross multiply
    28,878.86x = 43,322.70 × 7,819.58
  4. Step 4: Simplify right side
    28,878.86x = 338,765,318.47
  5. Step 5: Solve for x
    x = 338,765,318.47/28,878.86
  6. Step 6: Final answer
    x = 11,730.56

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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.