Home / 21,222.65-31,803.79-15,632.03

Finding the Fourth Proportional to 21,222.65, 31,803.79 and 15,632.03

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Solution

The fourth proportional to 21,222.65, 31,803.79 and 15,632.03 is: 23,425.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.65 : 31,803.79 = 15,632.03 : x
  2. Step 2: Convert to fraction form
    21,222.65/31,803.79 = 15,632.03/x
  3. Step 3: Cross multiply
    21,222.65x = 31,803.79 × 15,632.03
  4. Step 4: Simplify right side
    21,222.65x = 497,157,799.39
  5. Step 5: Solve for x
    x = 497,157,799.39/21,222.65
  6. Step 6: Final answer
    x = 23,425.81

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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.