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Finding the Fourth Proportional to 30,644.80, 46,010.40 and 18,980.80

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Solution

The fourth proportional to 30,644.80, 46,010.40 and 18,980.80 is: 28,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.80 : 46,010.40 = 18,980.80 : x
  2. Step 2: Convert to fraction form
    30,644.80/46,010.40 = 18,980.80/x
  3. Step 3: Cross multiply
    30,644.80x = 46,010.40 × 18,980.80
  4. Step 4: Simplify right side
    30,644.80x = 873,314,200.32
  5. Step 5: Solve for x
    x = 873,314,200.32/30,644.80
  6. Step 6: Final answer
    x = 28,497.96

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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.