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Finding the Fourth Proportional to 12,495.79, 18,743.68 and 5,103.73

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Solution

The fourth proportional to 12,495.79, 18,743.68 and 5,103.73 is: 7,655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.79 : 18,743.68 = 5,103.73 : x
  2. Step 2: Convert to fraction form
    12,495.79/18,743.68 = 5,103.73/x
  3. Step 3: Cross multiply
    12,495.79x = 18,743.68 × 5,103.73
  4. Step 4: Simplify right side
    12,495.79x = 95,662,681.93
  5. Step 5: Solve for x
    x = 95,662,681.93/12,495.79
  6. Step 6: Final answer
    x = 7,655.59

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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.