Home / 14,405.92-21,571.44-12,339.20

Finding the Fourth Proportional to 14,405.92, 21,571.44 and 12,339.20

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Solution

The fourth proportional to 14,405.92, 21,571.44 and 12,339.20 is: 18,476.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,405.92 : 21,571.44 = 12,339.20 : x
  2. Step 2: Convert to fraction form
    14,405.92/21,571.44 = 12,339.20/x
  3. Step 3: Cross multiply
    14,405.92x = 21,571.44 × 12,339.20
  4. Step 4: Simplify right side
    14,405.92x = 266,174,312.45
  5. Step 5: Solve for x
    x = 266,174,312.45/14,405.92
  6. Step 6: Final answer
    x = 18,476.73

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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.