Home / 12,378.67-18,559.79-4,055.76

Finding the Fourth Proportional to 12,378.67, 18,559.79 and 4,055.76

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Solution

The fourth proportional to 12,378.67, 18,559.79 and 4,055.76 is: 6,080.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.67 : 18,559.79 = 4,055.76 : x
  2. Step 2: Convert to fraction form
    12,378.67/18,559.79 = 4,055.76/x
  3. Step 3: Cross multiply
    12,378.67x = 18,559.79 × 4,055.76
  4. Step 4: Simplify right side
    12,378.67x = 75,274,064.03
  5. Step 5: Solve for x
    x = 75,274,064.03/12,378.67
  6. Step 6: Final answer
    x = 6,080.95

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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.