Home / 20,939.03-31,411.44-6,145.86

Finding the Fourth Proportional to 20,939.03, 31,411.44 and 6,145.86

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Solution

The fourth proportional to 20,939.03, 31,411.44 and 6,145.86 is: 9,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.03 : 31,411.44 = 6,145.86 : x
  2. Step 2: Convert to fraction form
    20,939.03/31,411.44 = 6,145.86/x
  3. Step 3: Cross multiply
    20,939.03x = 31,411.44 × 6,145.86
  4. Step 4: Simplify right side
    20,939.03x = 193,050,312.64
  5. Step 5: Solve for x
    x = 193,050,312.64/20,939.03
  6. Step 6: Final answer
    x = 9,219.64

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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.