Home / 20,558.86-30,838.91-8,082.03

Finding the Fourth Proportional to 20,558.86, 30,838.91 and 8,082.03

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Solution

The fourth proportional to 20,558.86, 30,838.91 and 8,082.03 is: 12,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.86 : 30,838.91 = 8,082.03 : x
  2. Step 2: Convert to fraction form
    20,558.86/30,838.91 = 8,082.03/x
  3. Step 3: Cross multiply
    20,558.86x = 30,838.91 × 8,082.03
  4. Step 4: Simplify right side
    20,558.86x = 249,240,995.79
  5. Step 5: Solve for x
    x = 249,240,995.79/20,558.86
  6. Step 6: Final answer
    x = 12,123.29

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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.