Home / 12,420.94-18,632.27-4,106.81

Finding the Fourth Proportional to 12,420.94, 18,632.27 and 4,106.81

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Solution

The fourth proportional to 12,420.94, 18,632.27 and 4,106.81 is: 6,160.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.94 : 18,632.27 = 4,106.81 : x
  2. Step 2: Convert to fraction form
    12,420.94/18,632.27 = 4,106.81/x
  3. Step 3: Cross multiply
    12,420.94x = 18,632.27 × 4,106.81
  4. Step 4: Simplify right side
    12,420.94x = 76,519,109.86
  5. Step 5: Solve for x
    x = 76,519,109.86/12,420.94
  6. Step 6: Final answer
    x = 6,160.49

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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.