Home / 42,974.12-64,419.27-18,021.67

Finding the Fourth Proportional to 42,974.12, 64,419.27 and 18,021.67

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Solution

The fourth proportional to 42,974.12, 64,419.27 and 18,021.67 is: 27,014.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,974.12 : 64,419.27 = 18,021.67 : x
  2. Step 2: Convert to fraction form
    42,974.12/64,419.27 = 18,021.67/x
  3. Step 3: Cross multiply
    42,974.12x = 64,419.27 × 18,021.67
  4. Step 4: Simplify right side
    42,974.12x = 1,160,942,735.47
  5. Step 5: Solve for x
    x = 1,160,942,735.47/42,974.12
  6. Step 6: Final answer
    x = 27,014.93

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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.