Home / 12,485.11-18,731.27-5,557.99

Finding the Fourth Proportional to 12,485.11, 18,731.27 and 5,557.99

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Solution

The fourth proportional to 12,485.11, 18,731.27 and 5,557.99 is: 8,338.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.11 : 18,731.27 = 5,557.99 : x
  2. Step 2: Convert to fraction form
    12,485.11/18,731.27 = 5,557.99/x
  3. Step 3: Cross multiply
    12,485.11x = 18,731.27 × 5,557.99
  4. Step 4: Simplify right side
    12,485.11x = 104,108,211.35
  5. Step 5: Solve for x
    x = 104,108,211.35/12,485.11
  6. Step 6: Final answer
    x = 8,338.59

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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.