Home / 22,187.45-30,618.41-12,115.81

Finding the Fourth Proportional to 22,187.45, 30,618.41 and 12,115.81

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Solution

The fourth proportional to 22,187.45, 30,618.41 and 12,115.81 is: 16,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.45 : 30,618.41 = 12,115.81 : x
  2. Step 2: Convert to fraction form
    22,187.45/30,618.41 = 12,115.81/x
  3. Step 3: Cross multiply
    22,187.45x = 30,618.41 × 12,115.81
  4. Step 4: Simplify right side
    22,187.45x = 370,966,815.76
  5. Step 5: Solve for x
    x = 370,966,815.76/22,187.45
  6. Step 6: Final answer
    x = 16,719.67

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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.