Home / 30,807.09-42,514.38-17,375.70

Finding the Fourth Proportional to 30,807.09, 42,514.38 and 17,375.70

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Solution

The fourth proportional to 30,807.09, 42,514.38 and 17,375.70 is: 23,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.09 : 42,514.38 = 17,375.70 : x
  2. Step 2: Convert to fraction form
    30,807.09/42,514.38 = 17,375.70/x
  3. Step 3: Cross multiply
    30,807.09x = 42,514.38 × 17,375.70
  4. Step 4: Simplify right side
    30,807.09x = 738,717,112.57
  5. Step 5: Solve for x
    x = 738,717,112.57/30,807.09
  6. Step 6: Final answer
    x = 23,978.80

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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.