Home / 28,478.24-39,289.56-17,864

Finding the Fourth Proportional to 28,478.24, 39,289.56 and 17,864

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Solution

The fourth proportional to 28,478.24, 39,289.56 and 17,864 is: 24,645.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.24 : 39,289.56 = 17,864 : x
  2. Step 2: Convert to fraction form
    28,478.24/39,289.56 = 17,864/x
  3. Step 3: Cross multiply
    28,478.24x = 39,289.56 × 17,864
  4. Step 4: Simplify right side
    28,478.24x = 701,868,699.84
  5. Step 5: Solve for x
    x = 701,868,699.84/28,478.24
  6. Step 6: Final answer
    x = 24,645.79

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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.