Home / 12,481.27-18,715.64-4,158.36

Finding the Fourth Proportional to 12,481.27, 18,715.64 and 4,158.36

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Solution

The fourth proportional to 12,481.27, 18,715.64 and 4,158.36 is: 6,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.27 : 18,715.64 = 4,158.36 : x
  2. Step 2: Convert to fraction form
    12,481.27/18,715.64 = 4,158.36/x
  3. Step 3: Cross multiply
    12,481.27x = 18,715.64 × 4,158.36
  4. Step 4: Simplify right side
    12,481.27x = 77,826,368.75
  5. Step 5: Solve for x
    x = 77,826,368.75/12,481.27
  6. Step 6: Final answer
    x = 6,235.45

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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.