Home / 9,918.30-13,688.36-6,336.55

Finding the Fourth Proportional to 9,918.30, 13,688.36 and 6,336.55

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Solution

The fourth proportional to 9,918.30, 13,688.36 and 6,336.55 is: 8,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.30 : 13,688.36 = 6,336.55 : x
  2. Step 2: Convert to fraction form
    9,918.30/13,688.36 = 6,336.55/x
  3. Step 3: Cross multiply
    9,918.30x = 13,688.36 × 6,336.55
  4. Step 4: Simplify right side
    9,918.30x = 86,736,977.56
  5. Step 5: Solve for x
    x = 86,736,977.56/9,918.30
  6. Step 6: Final answer
    x = 8,745.15

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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.