Home / 12,079.39-18,120.63-4,288.27

Finding the Fourth Proportional to 12,079.39, 18,120.63 and 4,288.27

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Solution

The fourth proportional to 12,079.39, 18,120.63 and 4,288.27 is: 6,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.39 : 18,120.63 = 4,288.27 : x
  2. Step 2: Convert to fraction form
    12,079.39/18,120.63 = 4,288.27/x
  3. Step 3: Cross multiply
    12,079.39x = 18,120.63 × 4,288.27
  4. Step 4: Simplify right side
    12,079.39x = 77,706,154.01
  5. Step 5: Solve for x
    x = 77,706,154.01/12,079.39
  6. Step 6: Final answer
    x = 6,432.95

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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.