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Finding the Fourth Proportional to 18,313.94, 27,482.19 and 7,218.74

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Solution

The fourth proportional to 18,313.94, 27,482.19 and 7,218.74 is: 10,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.94 : 27,482.19 = 7,218.74 : x
  2. Step 2: Convert to fraction form
    18,313.94/27,482.19 = 7,218.74/x
  3. Step 3: Cross multiply
    18,313.94x = 27,482.19 × 7,218.74
  4. Step 4: Simplify right side
    18,313.94x = 198,386,784.24
  5. Step 5: Solve for x
    x = 198,386,784.24/18,313.94
  6. Step 6: Final answer
    x = 10,832.56

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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.