Home / 12,139.47-18,194.07-4,339.71

Finding the Fourth Proportional to 12,139.47, 18,194.07 and 4,339.71

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Solution

The fourth proportional to 12,139.47, 18,194.07 and 4,339.71 is: 6,504.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.47 : 18,194.07 = 4,339.71 : x
  2. Step 2: Convert to fraction form
    12,139.47/18,194.07 = 4,339.71/x
  3. Step 3: Cross multiply
    12,139.47x = 18,194.07 × 4,339.71
  4. Step 4: Simplify right side
    12,139.47x = 78,956,907.40
  5. Step 5: Solve for x
    x = 78,956,907.40/12,139.47
  6. Step 6: Final answer
    x = 6,504.15

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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.