Home / 15,900.26-21,940.74-9,188.04

Finding the Fourth Proportional to 15,900.26, 21,940.74 and 9,188.04

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Solution

The fourth proportional to 15,900.26, 21,940.74 and 9,188.04 is: 12,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.26 : 21,940.74 = 9,188.04 : x
  2. Step 2: Convert to fraction form
    15,900.26/21,940.74 = 9,188.04/x
  3. Step 3: Cross multiply
    15,900.26x = 21,940.74 × 9,188.04
  4. Step 4: Simplify right side
    15,900.26x = 201,592,396.75
  5. Step 5: Solve for x
    x = 201,592,396.75/15,900.26
  6. Step 6: Final answer
    x = 12,678.56

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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.