Home / 9,615.44-13,269.48-5,639.42

Finding the Fourth Proportional to 9,615.44, 13,269.48 and 5,639.42

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Solution

The fourth proportional to 9,615.44, 13,269.48 and 5,639.42 is: 7,782.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,615.44 : 13,269.48 = 5,639.42 : x
  2. Step 2: Convert to fraction form
    9,615.44/13,269.48 = 5,639.42/x
  3. Step 3: Cross multiply
    9,615.44x = 13,269.48 × 5,639.42
  4. Step 4: Simplify right side
    9,615.44x = 74,832,170.90
  5. Step 5: Solve for x
    x = 74,832,170.90/9,615.44
  6. Step 6: Final answer
    x = 7,782.50

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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.