Home / 21,223.69-31,835.54-8,072.98

Finding the Fourth Proportional to 21,223.69, 31,835.54 and 8,072.98

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Solution

The fourth proportional to 21,223.69, 31,835.54 and 8,072.98 is: 12,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.69 : 31,835.54 = 8,072.98 : x
  2. Step 2: Convert to fraction form
    21,223.69/31,835.54 = 8,072.98/x
  3. Step 3: Cross multiply
    21,223.69x = 31,835.54 × 8,072.98
  4. Step 4: Simplify right side
    21,223.69x = 257,007,637.34
  5. Step 5: Solve for x
    x = 257,007,637.34/21,223.69
  6. Step 6: Final answer
    x = 12,109.47

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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.