Home / 21,027.86-31,541.23-7,703.90

Finding the Fourth Proportional to 21,027.86, 31,541.23 and 7,703.90

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Solution

The fourth proportional to 21,027.86, 31,541.23 and 7,703.90 is: 11,555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.86 : 31,541.23 = 7,703.90 : x
  2. Step 2: Convert to fraction form
    21,027.86/31,541.23 = 7,703.90/x
  3. Step 3: Cross multiply
    21,027.86x = 31,541.23 × 7,703.90
  4. Step 4: Simplify right side
    21,027.86x = 242,990,481.80
  5. Step 5: Solve for x
    x = 242,990,481.80/21,027.86
  6. Step 6: Final answer
    x = 11,555.64

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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.