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Finding the Fourth Proportional to 12,362.79, 18,544.38 and 6,815.10

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Solution

The fourth proportional to 12,362.79, 18,544.38 and 6,815.10 is: 10,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,362.79 : 18,544.38 = 6,815.10 : x
  2. Step 2: Convert to fraction form
    12,362.79/18,544.38 = 6,815.10/x
  3. Step 3: Cross multiply
    12,362.79x = 18,544.38 × 6,815.10
  4. Step 4: Simplify right side
    12,362.79x = 126,381,804.14
  5. Step 5: Solve for x
    x = 126,381,804.14/12,362.79
  6. Step 6: Final answer
    x = 10,222.76

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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.