Home / 22,579.86-31,163.76-13,628.64

Finding the Fourth Proportional to 22,579.86, 31,163.76 and 13,628.64

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Solution

The fourth proportional to 22,579.86, 31,163.76 and 13,628.64 is: 18,809.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,579.86 : 31,163.76 = 13,628.64 : x
  2. Step 2: Convert to fraction form
    22,579.86/31,163.76 = 13,628.64/x
  3. Step 3: Cross multiply
    22,579.86x = 31,163.76 × 13,628.64
  4. Step 4: Simplify right side
    22,579.86x = 424,719,666.09
  5. Step 5: Solve for x
    x = 424,719,666.09/22,579.86
  6. Step 6: Final answer
    x = 18,809.67

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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.