Home / 14,190.30-21,288.90-6,399.12

Finding the Fourth Proportional to 14,190.30, 21,288.90 and 6,399.12

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Solution

The fourth proportional to 14,190.30, 21,288.90 and 6,399.12 is: 9,600.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.30 : 21,288.90 = 6,399.12 : x
  2. Step 2: Convert to fraction form
    14,190.30/21,288.90 = 6,399.12/x
  3. Step 3: Cross multiply
    14,190.30x = 21,288.90 × 6,399.12
  4. Step 4: Simplify right side
    14,190.30x = 136,230,225.77
  5. Step 5: Solve for x
    x = 136,230,225.77/14,190.30
  6. Step 6: Final answer
    x = 9,600.24

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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.