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Finding the Fourth Proportional to 18,495.84, 27,739.20 and 7,410.72

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Solution

The fourth proportional to 18,495.84, 27,739.20 and 7,410.72 is: 11,114.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.84 : 27,739.20 = 7,410.72 : x
  2. Step 2: Convert to fraction form
    18,495.84/27,739.20 = 7,410.72/x
  3. Step 3: Cross multiply
    18,495.84x = 27,739.20 × 7,410.72
  4. Step 4: Simplify right side
    18,495.84x = 205,567,444.22
  5. Step 5: Solve for x
    x = 205,567,444.22/18,495.84
  6. Step 6: Final answer
    x = 11,114.25

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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.