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Finding the Fourth Proportional to 18,698.71, 28,041.06 and 6,216.43

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Solution

The fourth proportional to 18,698.71, 28,041.06 and 6,216.43 is: 9,322.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.71 : 28,041.06 = 6,216.43 : x
  2. Step 2: Convert to fraction form
    18,698.71/28,041.06 = 6,216.43/x
  3. Step 3: Cross multiply
    18,698.71x = 28,041.06 × 6,216.43
  4. Step 4: Simplify right side
    18,698.71x = 174,315,286.62
  5. Step 5: Solve for x
    x = 174,315,286.62/18,698.71
  6. Step 6: Final answer
    x = 9,322.32

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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.