Home / 28,878.69-43,318.04-12,238.35

Finding the Fourth Proportional to 28,878.69, 43,318.04 and 12,238.35

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Solution

The fourth proportional to 28,878.69, 43,318.04 and 12,238.35 is: 18,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.69 : 43,318.04 = 12,238.35 : x
  2. Step 2: Convert to fraction form
    28,878.69/43,318.04 = 12,238.35/x
  3. Step 3: Cross multiply
    28,878.69x = 43,318.04 × 12,238.35
  4. Step 4: Simplify right side
    28,878.69x = 530,141,273.64
  5. Step 5: Solve for x
    x = 530,141,273.64/28,878.69
  6. Step 6: Final answer
    x = 18,357.53

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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.