Home / 20,668.89-31,007.19-7,349.80

Finding the Fourth Proportional to 20,668.89, 31,007.19 and 7,349.80

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Solution

The fourth proportional to 20,668.89, 31,007.19 and 7,349.80 is: 11,026.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.89 : 31,007.19 = 7,349.80 : x
  2. Step 2: Convert to fraction form
    20,668.89/31,007.19 = 7,349.80/x
  3. Step 3: Cross multiply
    20,668.89x = 31,007.19 × 7,349.80
  4. Step 4: Simplify right side
    20,668.89x = 227,896,663.26
  5. Step 5: Solve for x
    x = 227,896,663.26/20,668.89
  6. Step 6: Final answer
    x = 11,026.07

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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.