Home / 30,285.18-41,769.82-19,678.26

Finding the Fourth Proportional to 30,285.18, 41,769.82 and 19,678.26

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Solution

The fourth proportional to 30,285.18, 41,769.82 and 19,678.26 is: 27,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.18 : 41,769.82 = 19,678.26 : x
  2. Step 2: Convert to fraction form
    30,285.18/41,769.82 = 19,678.26/x
  3. Step 3: Cross multiply
    30,285.18x = 41,769.82 × 19,678.26
  4. Step 4: Simplify right side
    30,285.18x = 821,957,378.11
  5. Step 5: Solve for x
    x = 821,957,378.11/30,285.18
  6. Step 6: Final answer
    x = 27,140.58

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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.