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Finding the Fourth Proportional to 18,309.60, 27,464.40 and 9,093.60

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Solution

The fourth proportional to 18,309.60, 27,464.40 and 9,093.60 is: 13,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.60 : 27,464.40 = 9,093.60 : x
  2. Step 2: Convert to fraction form
    18,309.60/27,464.40 = 9,093.60/x
  3. Step 3: Cross multiply
    18,309.60x = 27,464.40 × 9,093.60
  4. Step 4: Simplify right side
    18,309.60x = 249,750,267.84
  5. Step 5: Solve for x
    x = 249,750,267.84/18,309.60
  6. Step 6: Final answer
    x = 13,640.40

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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.