Home / 30,005.67-41,428.62-18,680.25

Finding the Fourth Proportional to 30,005.67, 41,428.62 and 18,680.25

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Solution

The fourth proportional to 30,005.67, 41,428.62 and 18,680.25 is: 25,791.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.67 : 41,428.62 = 18,680.25 : x
  2. Step 2: Convert to fraction form
    30,005.67/41,428.62 = 18,680.25/x
  3. Step 3: Cross multiply
    30,005.67x = 41,428.62 × 18,680.25
  4. Step 4: Simplify right side
    30,005.67x = 773,896,978.76
  5. Step 5: Solve for x
    x = 773,896,978.76/30,005.67
  6. Step 6: Final answer
    x = 25,791.69

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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.