Home / 12,028.14-16,571.67-8,390.70

Finding the Fourth Proportional to 12,028.14, 16,571.67 and 8,390.70

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Solution

The fourth proportional to 12,028.14, 16,571.67 and 8,390.70 is: 11,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.14 : 16,571.67 = 8,390.70 : x
  2. Step 2: Convert to fraction form
    12,028.14/16,571.67 = 8,390.70/x
  3. Step 3: Cross multiply
    12,028.14x = 16,571.67 × 8,390.70
  4. Step 4: Simplify right side
    12,028.14x = 139,047,911.47
  5. Step 5: Solve for x
    x = 139,047,911.47/12,028.14
  6. Step 6: Final answer
    x = 11,560.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.