Home / 13,364.15-18,442.58-7,231.85

Finding the Fourth Proportional to 13,364.15, 18,442.58 and 7,231.85

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Solution

The fourth proportional to 13,364.15, 18,442.58 and 7,231.85 is: 9,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.15 : 18,442.58 = 7,231.85 : x
  2. Step 2: Convert to fraction form
    13,364.15/18,442.58 = 7,231.85/x
  3. Step 3: Cross multiply
    13,364.15x = 18,442.58 × 7,231.85
  4. Step 4: Simplify right side
    13,364.15x = 133,373,977.80
  5. Step 5: Solve for x
    x = 133,373,977.80/13,364.15
  6. Step 6: Final answer
    x = 9,979.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.