Home / 18,986.16-28,479.27-5,838.63

Finding the Fourth Proportional to 18,986.16, 28,479.27 and 5,838.63

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Solution

The fourth proportional to 18,986.16, 28,479.27 and 5,838.63 is: 8,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.16 : 28,479.27 = 5,838.63 : x
  2. Step 2: Convert to fraction form
    18,986.16/28,479.27 = 5,838.63/x
  3. Step 3: Cross multiply
    18,986.16x = 28,479.27 × 5,838.63
  4. Step 4: Simplify right side
    18,986.16x = 166,279,920.20
  5. Step 5: Solve for x
    x = 166,279,920.20/18,986.16
  6. Step 6: Final answer
    x = 8,757.95

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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.