Home / 9,907.55-13,672.36-5,431.49

Finding the Fourth Proportional to 9,907.55, 13,672.36 and 5,431.49

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Solution

The fourth proportional to 9,907.55, 13,672.36 and 5,431.49 is: 7,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907.55 : 13,672.36 = 5,431.49 : x
  2. Step 2: Convert to fraction form
    9,907.55/13,672.36 = 5,431.49/x
  3. Step 3: Cross multiply
    9,907.55x = 13,672.36 × 5,431.49
  4. Step 4: Simplify right side
    9,907.55x = 74,261,286.62
  5. Step 5: Solve for x
    x = 74,261,286.62/9,907.55
  6. Step 6: Final answer
    x = 7,495.42

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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.