Home / 12,078.95-18,117.61-3,313.13

Finding the Fourth Proportional to 12,078.95, 18,117.61 and 3,313.13

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Solution

The fourth proportional to 12,078.95, 18,117.61 and 3,313.13 is: 4,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.95 : 18,117.61 = 3,313.13 : x
  2. Step 2: Convert to fraction form
    12,078.95/18,117.61 = 3,313.13/x
  3. Step 3: Cross multiply
    12,078.95x = 18,117.61 × 3,313.13
  4. Step 4: Simplify right side
    12,078.95x = 60,025,898.35
  5. Step 5: Solve for x
    x = 60,025,898.35/12,078.95
  6. Step 6: Final answer
    x = 4,969.47

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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.