Home / 12,045.78-18,069.14-3,280.67

Finding the Fourth Proportional to 12,045.78, 18,069.14 and 3,280.67

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Solution

The fourth proportional to 12,045.78, 18,069.14 and 3,280.67 is: 4,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,045.78 : 18,069.14 = 3,280.67 : x
  2. Step 2: Convert to fraction form
    12,045.78/18,069.14 = 3,280.67/x
  3. Step 3: Cross multiply
    12,045.78x = 18,069.14 × 3,280.67
  4. Step 4: Simplify right side
    12,045.78x = 59,278,871.14
  5. Step 5: Solve for x
    x = 59,278,871.14/12,045.78
  6. Step 6: Final answer
    x = 4,921.13

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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.