Home / 11,342.40-15,653.12-6,629.44

Finding the Fourth Proportional to 11,342.40, 15,653.12 and 6,629.44

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Solution

The fourth proportional to 11,342.40, 15,653.12 and 6,629.44 is: 9,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,342.40 : 15,653.12 = 6,629.44 : x
  2. Step 2: Convert to fraction form
    11,342.40/15,653.12 = 6,629.44/x
  3. Step 3: Cross multiply
    11,342.40x = 15,653.12 × 6,629.44
  4. Step 4: Simplify right side
    11,342.40x = 103,771,419.85
  5. Step 5: Solve for x
    x = 103,771,419.85/11,342.40
  6. Step 6: Final answer
    x = 9,148.98

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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.