Home / 30,986.10-46,479.15-19,905.30

Finding the Fourth Proportional to 30,986.10, 46,479.15 and 19,905.30

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Solution

The fourth proportional to 30,986.10, 46,479.15 and 19,905.30 is: 29,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.10 : 46,479.15 = 19,905.30 : x
  2. Step 2: Convert to fraction form
    30,986.10/46,479.15 = 19,905.30/x
  3. Step 3: Cross multiply
    30,986.10x = 46,479.15 × 19,905.30
  4. Step 4: Simplify right side
    30,986.10x = 925,181,424.50
  5. Step 5: Solve for x
    x = 925,181,424.50/30,986.10
  6. Step 6: Final answer
    x = 29,857.95

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Double scale
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Similar ratio
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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.