Home / 9,078.80-13,618.20-6,875.60

Finding the Fourth Proportional to 9,078.80, 13,618.20 and 6,875.60

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Solution

The fourth proportional to 9,078.80, 13,618.20 and 6,875.60 is: 10,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.80 : 13,618.20 = 6,875.60 : x
  2. Step 2: Convert to fraction form
    9,078.80/13,618.20 = 6,875.60/x
  3. Step 3: Cross multiply
    9,078.80x = 13,618.20 × 6,875.60
  4. Step 4: Simplify right side
    9,078.80x = 93,633,295.92
  5. Step 5: Solve for x
    x = 93,633,295.92/9,078.80
  6. Step 6: Final answer
    x = 10,313.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.