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Finding the Fourth Proportional to 18,483.79, 27,740.28 and 8,617.99

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Solution

The fourth proportional to 18,483.79, 27,740.28 and 8,617.99 is: 12,933.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.79 : 27,740.28 = 8,617.99 : x
  2. Step 2: Convert to fraction form
    18,483.79/27,740.28 = 8,617.99/x
  3. Step 3: Cross multiply
    18,483.79x = 27,740.28 × 8,617.99
  4. Step 4: Simplify right side
    18,483.79x = 239,065,455.64
  5. Step 5: Solve for x
    x = 239,065,455.64/18,483.79
  6. Step 6: Final answer
    x = 12,933.79

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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.