Home / 30,582.89-45,814.56-21,072.75

Finding the Fourth Proportional to 30,582.89, 45,814.56 and 21,072.75

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Solution

The fourth proportional to 30,582.89, 45,814.56 and 21,072.75 is: 31,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,582.89 : 45,814.56 = 21,072.75 : x
  2. Step 2: Convert to fraction form
    30,582.89/45,814.56 = 21,072.75/x
  3. Step 3: Cross multiply
    30,582.89x = 45,814.56 × 21,072.75
  4. Step 4: Simplify right side
    30,582.89x = 965,438,769.24
  5. Step 5: Solve for x
    x = 965,438,769.24/30,582.89
  6. Step 6: Final answer
    x = 31,567.94

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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.