Home / 21,222.63-31,842.09-7,903.80

Finding the Fourth Proportional to 21,222.63, 31,842.09 and 7,903.80

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Solution

The fourth proportional to 21,222.63, 31,842.09 and 7,903.80 is: 11,858.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.63 : 31,842.09 = 7,903.80 : x
  2. Step 2: Convert to fraction form
    21,222.63/31,842.09 = 7,903.80/x
  3. Step 3: Cross multiply
    21,222.63x = 31,842.09 × 7,903.80
  4. Step 4: Simplify right side
    21,222.63x = 251,673,510.94
  5. Step 5: Solve for x
    x = 251,673,510.94/21,222.63
  6. Step 6: Final answer
    x = 11,858.73

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1.5x scale

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.