Home / 20,558.23-30,849.71-8,871.45

Finding the Fourth Proportional to 20,558.23, 30,849.71 and 8,871.45

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Solution

The fourth proportional to 20,558.23, 30,849.71 and 8,871.45 is: 13,312.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.23 : 30,849.71 = 8,871.45 : x
  2. Step 2: Convert to fraction form
    20,558.23/30,849.71 = 8,871.45/x
  3. Step 3: Cross multiply
    20,558.23x = 30,849.71 × 8,871.45
  4. Step 4: Simplify right side
    20,558.23x = 273,681,659.78
  5. Step 5: Solve for x
    x = 273,681,659.78/20,558.23
  6. Step 6: Final answer
    x = 13,312.51

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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.