Home / 20,670.96-31,006.60-6,631.00

Finding the Fourth Proportional to 20,670.96, 31,006.60 and 6,631.00

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Solution

The fourth proportional to 20,670.96, 31,006.60 and 6,631.00 is: 9,946.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.96 : 31,006.60 = 6,631.00 : x
  2. Step 2: Convert to fraction form
    20,670.96/31,006.60 = 6,631.00/x
  3. Step 3: Cross multiply
    20,670.96x = 31,006.60 × 6,631.00
  4. Step 4: Simplify right side
    20,670.96x = 205,604,811.65
  5. Step 5: Solve for x
    x = 205,604,811.65/20,670.96
  6. Step 6: Final answer
    x = 9,946.56

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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.