Home / 20,283.79-27,989.71-11,898.67

Finding the Fourth Proportional to 20,283.79, 27,989.71 and 11,898.67

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Solution

The fourth proportional to 20,283.79, 27,989.71 and 11,898.67 is: 16,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.79 : 27,989.71 = 11,898.67 : x
  2. Step 2: Convert to fraction form
    20,283.79/27,989.71 = 11,898.67/x
  3. Step 3: Cross multiply
    20,283.79x = 27,989.71 × 11,898.67
  4. Step 4: Simplify right side
    20,283.79x = 333,040,322.69
  5. Step 5: Solve for x
    x = 333,040,322.69/20,283.79
  6. Step 6: Final answer
    x = 16,419.04

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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.