Home / 20,678.04-31,001.74-6,629.89

Finding the Fourth Proportional to 20,678.04, 31,001.74 and 6,629.89

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Solution

The fourth proportional to 20,678.04, 31,001.74 and 6,629.89 is: 9,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.04 : 31,001.74 = 6,629.89 : x
  2. Step 2: Convert to fraction form
    20,678.04/31,001.74 = 6,629.89/x
  3. Step 3: Cross multiply
    20,678.04x = 31,001.74 × 6,629.89
  4. Step 4: Simplify right side
    20,678.04x = 205,538,126.01
  5. Step 5: Solve for x
    x = 205,538,126.01/20,678.04
  6. Step 6: Final answer
    x = 9,939.92

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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.