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Finding the Fourth Proportional to 15,907.53, 21,954.41 and 9,619.89

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Solution

The fourth proportional to 15,907.53, 21,954.41 and 9,619.89 is: 13,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.53 : 21,954.41 = 9,619.89 : x
  2. Step 2: Convert to fraction form
    15,907.53/21,954.41 = 9,619.89/x
  3. Step 3: Cross multiply
    15,907.53x = 21,954.41 × 9,619.89
  4. Step 4: Simplify right side
    15,907.53x = 211,198,961.12
  5. Step 5: Solve for x
    x = 211,198,961.12/15,907.53
  6. Step 6: Final answer
    x = 13,276.67

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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.