Home / 12,210.94-18,318.48-4,811.50

Finding the Fourth Proportional to 12,210.94, 18,318.48 and 4,811.50

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Solution

The fourth proportional to 12,210.94, 18,318.48 and 4,811.50 is: 7,218.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.94 : 18,318.48 = 4,811.50 : x
  2. Step 2: Convert to fraction form
    12,210.94/18,318.48 = 4,811.50/x
  3. Step 3: Cross multiply
    12,210.94x = 18,318.48 × 4,811.50
  4. Step 4: Simplify right side
    12,210.94x = 88,139,366.52
  5. Step 5: Solve for x
    x = 88,139,366.52/12,210.94
  6. Step 6: Final answer
    x = 7,218.07

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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.