Home / 12,318.87-16,993.95-7,280.66

Finding the Fourth Proportional to 12,318.87, 16,993.95 and 7,280.66

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Solution

The fourth proportional to 12,318.87, 16,993.95 and 7,280.66 is: 10,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.87 : 16,993.95 = 7,280.66 : x
  2. Step 2: Convert to fraction form
    12,318.87/16,993.95 = 7,280.66/x
  3. Step 3: Cross multiply
    12,318.87x = 16,993.95 × 7,280.66
  4. Step 4: Simplify right side
    12,318.87x = 123,727,087.04
  5. Step 5: Solve for x
    x = 123,727,087.04/12,318.87
  6. Step 6: Final answer
    x = 10,043.70

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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.