Home / 20,681.96-31,007.81-6,633.99

Finding the Fourth Proportional to 20,681.96, 31,007.81 and 6,633.99

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Solution

The fourth proportional to 20,681.96, 31,007.81 and 6,633.99 is: 9,946.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.96 : 31,007.81 = 6,633.99 : x
  2. Step 2: Convert to fraction form
    20,681.96/31,007.81 = 6,633.99/x
  3. Step 3: Cross multiply
    20,681.96x = 31,007.81 × 6,633.99
  4. Step 4: Simplify right side
    20,681.96x = 205,705,518.05
  5. Step 5: Solve for x
    x = 205,705,518.05/20,681.96
  6. Step 6: Final answer
    x = 9,946.14

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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.