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Finding the Fourth Proportional to 12,400.79, 18,602.19 and 5,823.38

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Solution

The fourth proportional to 12,400.79, 18,602.19 and 5,823.38 is: 8,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.79 : 18,602.19 = 5,823.38 : x
  2. Step 2: Convert to fraction form
    12,400.79/18,602.19 = 5,823.38/x
  3. Step 3: Cross multiply
    12,400.79x = 18,602.19 × 5,823.38
  4. Step 4: Simplify right side
    12,400.79x = 108,327,667.71
  5. Step 5: Solve for x
    x = 108,327,667.71/12,400.79
  6. Step 6: Final answer
    x = 8,735.55

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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.