Home / 20,553.89-30,830.56-4,971.38

Finding the Fourth Proportional to 20,553.89, 30,830.56 and 4,971.38

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Solution

The fourth proportional to 20,553.89, 30,830.56 and 4,971.38 is: 7,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.89 : 30,830.56 = 4,971.38 : x
  2. Step 2: Convert to fraction form
    20,553.89/30,830.56 = 4,971.38/x
  3. Step 3: Cross multiply
    20,553.89x = 30,830.56 × 4,971.38
  4. Step 4: Simplify right side
    20,553.89x = 153,270,262.79
  5. Step 5: Solve for x
    x = 153,270,262.79/20,553.89
  6. Step 6: Final answer
    x = 7,457.00

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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.