Home / 12,078.52-18,117.60-3,313.60

Finding the Fourth Proportional to 12,078.52, 18,117.60 and 3,313.60

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Solution

The fourth proportional to 12,078.52, 18,117.60 and 3,313.60 is: 4,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.52 : 18,117.60 = 3,313.60 : x
  2. Step 2: Convert to fraction form
    12,078.52/18,117.60 = 3,313.60/x
  3. Step 3: Cross multiply
    12,078.52x = 18,117.60 × 3,313.60
  4. Step 4: Simplify right side
    12,078.52x = 60,034,479.36
  5. Step 5: Solve for x
    x = 60,034,479.36/12,078.52
  6. Step 6: Final answer
    x = 4,970.35

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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.