Home / 12,280.69-18,403.60-9,458.85

Finding the Fourth Proportional to 12,280.69, 18,403.60 and 9,458.85

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Solution

The fourth proportional to 12,280.69, 18,403.60 and 9,458.85 is: 14,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.69 : 18,403.60 = 9,458.85 : x
  2. Step 2: Convert to fraction form
    12,280.69/18,403.60 = 9,458.85/x
  3. Step 3: Cross multiply
    12,280.69x = 18,403.60 × 9,458.85
  4. Step 4: Simplify right side
    12,280.69x = 174,076,972.70
  5. Step 5: Solve for x
    x = 174,076,972.70/12,280.69
  6. Step 6: Final answer
    x = 14,174.85

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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.