Home / 12,045.90-18,068.48-3,280.54

Finding the Fourth Proportional to 12,045.90, 18,068.48 and 3,280.54

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Solution

The fourth proportional to 12,045.90, 18,068.48 and 3,280.54 is: 4,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,045.90 : 18,068.48 = 3,280.54 : x
  2. Step 2: Convert to fraction form
    12,045.90/18,068.48 = 3,280.54/x
  3. Step 3: Cross multiply
    12,045.90x = 18,068.48 × 3,280.54
  4. Step 4: Simplify right side
    12,045.90x = 59,274,371.38
  5. Step 5: Solve for x
    x = 59,274,371.38/12,045.90
  6. Step 6: Final answer
    x = 4,920.71

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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.