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Finding the Fourth Proportional to 18,495.96, 27,739.80 and 5,345.40

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Solution

The fourth proportional to 18,495.96, 27,739.80 and 5,345.40 is: 8,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.96 : 27,739.80 = 5,345.40 : x
  2. Step 2: Convert to fraction form
    18,495.96/27,739.80 = 5,345.40/x
  3. Step 3: Cross multiply
    18,495.96x = 27,739.80 × 5,345.40
  4. Step 4: Simplify right side
    18,495.96x = 148,280,326.92
  5. Step 5: Solve for x
    x = 148,280,326.92/18,495.96
  6. Step 6: Final answer
    x = 8,016.90

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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.