Home / 12,458.08-18,690.54-5,436.82

Finding the Fourth Proportional to 12,458.08, 18,690.54 and 5,436.82

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Solution

The fourth proportional to 12,458.08, 18,690.54 and 5,436.82 is: 8,156.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.08 : 18,690.54 = 5,436.82 : x
  2. Step 2: Convert to fraction form
    12,458.08/18,690.54 = 5,436.82/x
  3. Step 3: Cross multiply
    12,458.08x = 18,690.54 × 5,436.82
  4. Step 4: Simplify right side
    12,458.08x = 101,617,101.68
  5. Step 5: Solve for x
    x = 101,617,101.68/12,458.08
  6. Step 6: Final answer
    x = 8,156.72

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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.