Home / 12,455.66-18,683.55-3,690.65

Finding the Fourth Proportional to 12,455.66, 18,683.55 and 3,690.65

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Solution

The fourth proportional to 12,455.66, 18,683.55 and 3,690.65 is: 5,535.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.66 : 18,683.55 = 3,690.65 : x
  2. Step 2: Convert to fraction form
    12,455.66/18,683.55 = 3,690.65/x
  3. Step 3: Cross multiply
    12,455.66x = 18,683.55 × 3,690.65
  4. Step 4: Simplify right side
    12,455.66x = 68,954,341.16
  5. Step 5: Solve for x
    x = 68,954,341.16/12,455.66
  6. Step 6: Final answer
    x = 5,535.99

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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.