Home / 15,361.62-21,192.56-9,391.38

Finding the Fourth Proportional to 15,361.62, 21,192.56 and 9,391.38

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Solution

The fourth proportional to 15,361.62, 21,192.56 and 9,391.38 is: 12,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.62 : 21,192.56 = 9,391.38 : x
  2. Step 2: Convert to fraction form
    15,361.62/21,192.56 = 9,391.38/x
  3. Step 3: Cross multiply
    15,361.62x = 21,192.56 × 9,391.38
  4. Step 4: Simplify right side
    15,361.62x = 199,027,384.13
  5. Step 5: Solve for x
    x = 199,027,384.13/15,361.62
  6. Step 6: Final answer
    x = 12,956.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.