Home / 21,040.38-31,560.57-9,361.80

Finding the Fourth Proportional to 21,040.38, 31,560.57 and 9,361.80

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Solution

The fourth proportional to 21,040.38, 31,560.57 and 9,361.80 is: 14,042.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.38 : 31,560.57 = 9,361.80 : x
  2. Step 2: Convert to fraction form
    21,040.38/31,560.57 = 9,361.80/x
  3. Step 3: Cross multiply
    21,040.38x = 31,560.57 × 9,361.80
  4. Step 4: Simplify right side
    21,040.38x = 295,463,744.23
  5. Step 5: Solve for x
    x = 295,463,744.23/21,040.38
  6. Step 6: Final answer
    x = 14,042.70

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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.