Home / 12,121.79-18,182.65-3,356.67

Finding the Fourth Proportional to 12,121.79, 18,182.65 and 3,356.67

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Solution

The fourth proportional to 12,121.79, 18,182.65 and 3,356.67 is: 5,035.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.79 : 18,182.65 = 3,356.67 : x
  2. Step 2: Convert to fraction form
    12,121.79/18,182.65 = 3,356.67/x
  3. Step 3: Cross multiply
    12,121.79x = 18,182.65 × 3,356.67
  4. Step 4: Simplify right side
    12,121.79x = 61,033,147.38
  5. Step 5: Solve for x
    x = 61,033,147.38/12,121.79
  6. Step 6: Final answer
    x = 5,035.00

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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.