Home / 28,818-43,210.39-11,278.26

Finding the Fourth Proportional to 28,818, 43,210.39 and 11,278.26

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Solution

The fourth proportional to 28,818, 43,210.39 and 11,278.26 is: 16,910.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,818 : 43,210.39 = 11,278.26 : x
  2. Step 2: Convert to fraction form
    28,818/43,210.39 = 11,278.26/x
  3. Step 3: Cross multiply
    28,818x = 43,210.39 × 11,278.26
  4. Step 4: Simplify right side
    28,818x = 487,338,013.12
  5. Step 5: Solve for x
    x = 487,338,013.12/28,818
  6. Step 6: Final answer
    x = 16,910.89

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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.