Home / 18,762.32-28,143.84-4,911.68

Finding the Fourth Proportional to 18,762.32, 28,143.84 and 4,911.68

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Solution

The fourth proportional to 18,762.32, 28,143.84 and 4,911.68 is: 7,367.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.32 : 28,143.84 = 4,911.68 : x
  2. Step 2: Convert to fraction form
    18,762.32/28,143.84 = 4,911.68/x
  3. Step 3: Cross multiply
    18,762.32x = 28,143.84 × 4,911.68
  4. Step 4: Simplify right side
    18,762.32x = 138,233,536.05
  5. Step 5: Solve for x
    x = 138,233,536.05/18,762.32
  6. Step 6: Final answer
    x = 7,367.61

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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.