Home / 13,490.78-20,234.88-4,725.23

Finding the Fourth Proportional to 13,490.78, 20,234.88 and 4,725.23

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Solution

The fourth proportional to 13,490.78, 20,234.88 and 4,725.23 is: 7,087.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.78 : 20,234.88 = 4,725.23 : x
  2. Step 2: Convert to fraction form
    13,490.78/20,234.88 = 4,725.23/x
  3. Step 3: Cross multiply
    13,490.78x = 20,234.88 × 4,725.23
  4. Step 4: Simplify right side
    13,490.78x = 95,614,360.85
  5. Step 5: Solve for x
    x = 95,614,360.85/13,490.78
  6. Step 6: Final answer
    x = 7,087.39

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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.