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Finding the Fourth Proportional to 18,318.40, 27,477.60 and 17,089.60

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Solution

The fourth proportional to 18,318.40, 27,477.60 and 17,089.60 is: 25,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.40 : 27,477.60 = 17,089.60 : x
  2. Step 2: Convert to fraction form
    18,318.40/27,477.60 = 17,089.60/x
  3. Step 3: Cross multiply
    18,318.40x = 27,477.60 × 17,089.60
  4. Step 4: Simplify right side
    18,318.40x = 469,581,192.96
  5. Step 5: Solve for x
    x = 469,581,192.96/18,318.40
  6. Step 6: Final answer
    x = 25,634.40

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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.