Home / 14,190.24-21,285.32-6,389.92

Finding the Fourth Proportional to 14,190.24, 21,285.32 and 6,389.92

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Solution

The fourth proportional to 14,190.24, 21,285.32 and 6,389.92 is: 9,584.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.24 : 21,285.32 = 6,389.92 : x
  2. Step 2: Convert to fraction form
    14,190.24/21,285.32 = 6,389.92/x
  3. Step 3: Cross multiply
    14,190.24x = 21,285.32 × 6,389.92
  4. Step 4: Simplify right side
    14,190.24x = 136,011,491.97
  5. Step 5: Solve for x
    x = 136,011,491.97/14,190.24
  6. Step 6: Final answer
    x = 9,584.86

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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.