Home / 30,490.44-42,072.90-17,747.70

Finding the Fourth Proportional to 30,490.44, 42,072.90 and 17,747.70

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Solution

The fourth proportional to 30,490.44, 42,072.90 and 17,747.70 is: 24,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.44 : 42,072.90 = 17,747.70 : x
  2. Step 2: Convert to fraction form
    30,490.44/42,072.90 = 17,747.70/x
  3. Step 3: Cross multiply
    30,490.44x = 42,072.90 × 17,747.70
  4. Step 4: Simplify right side
    30,490.44x = 746,697,207.33
  5. Step 5: Solve for x
    x = 746,697,207.33/30,490.44
  6. Step 6: Final answer
    x = 24,489.55

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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.