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Finding the Fourth Proportional to 18,303.79, 27,464.88 and 7,218.43

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Solution

The fourth proportional to 18,303.79, 27,464.88 and 7,218.43 is: 10,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.79 : 27,464.88 = 7,218.43 : x
  2. Step 2: Convert to fraction form
    18,303.79/27,464.88 = 7,218.43/x
  3. Step 3: Cross multiply
    18,303.79x = 27,464.88 × 7,218.43
  4. Step 4: Simplify right side
    18,303.79x = 198,253,313.74
  5. Step 5: Solve for x
    x = 198,253,313.74/18,303.79
  6. Step 6: Final answer
    x = 10,831.27

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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.