Home / 30,897.20-46,355.40-12,179.60

Finding the Fourth Proportional to 30,897.20, 46,355.40 and 12,179.60

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Solution

The fourth proportional to 30,897.20, 46,355.40 and 12,179.60 is: 18,273.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,897.20 : 46,355.40 = 12,179.60 : x
  2. Step 2: Convert to fraction form
    30,897.20/46,355.40 = 12,179.60/x
  3. Step 3: Cross multiply
    30,897.20x = 46,355.40 × 12,179.60
  4. Step 4: Simplify right side
    30,897.20x = 564,590,229.84
  5. Step 5: Solve for x
    x = 564,590,229.84/30,897.20
  6. Step 6: Final answer
    x = 18,273.18

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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.