Home / 28,920.39-39,898.37-18,845.16

Finding the Fourth Proportional to 28,920.39, 39,898.37 and 18,845.16

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Solution

The fourth proportional to 28,920.39, 39,898.37 and 18,845.16 is: 25,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.39 : 39,898.37 = 18,845.16 : x
  2. Step 2: Convert to fraction form
    28,920.39/39,898.37 = 18,845.16/x
  3. Step 3: Cross multiply
    28,920.39x = 39,898.37 × 18,845.16
  4. Step 4: Simplify right side
    28,920.39x = 751,891,063.88
  5. Step 5: Solve for x
    x = 751,891,063.88/28,920.39
  6. Step 6: Final answer
    x = 25,998.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.