Home / 21,222.18-31,822.34-9,525.38

Finding the Fourth Proportional to 21,222.18, 31,822.34 and 9,525.38

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Solution

The fourth proportional to 21,222.18, 31,822.34 and 9,525.38 is: 14,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.18 : 31,822.34 = 9,525.38 : x
  2. Step 2: Convert to fraction form
    21,222.18/31,822.34 = 9,525.38/x
  3. Step 3: Cross multiply
    21,222.18x = 31,822.34 × 9,525.38
  4. Step 4: Simplify right side
    21,222.18x = 303,119,674.25
  5. Step 5: Solve for x
    x = 303,119,674.25/21,222.18
  6. Step 6: Final answer
    x = 14,283.15

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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.