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Finding the Fourth Proportional to 30,189.78, 45,284.40 and 17,795.97

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Solution

The fourth proportional to 30,189.78, 45,284.40 and 17,795.97 is: 26,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,189.78 : 45,284.40 = 17,795.97 : x
  2. Step 2: Convert to fraction form
    30,189.78/45,284.40 = 17,795.97/x
  3. Step 3: Cross multiply
    30,189.78x = 45,284.40 × 17,795.97
  4. Step 4: Simplify right side
    30,189.78x = 805,879,823.87
  5. Step 5: Solve for x
    x = 805,879,823.87/30,189.78
  6. Step 6: Final answer
    x = 26,693.80

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1.5x scale

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.