Home / 14,288.40-21,400.20-9,039.60

Finding the Fourth Proportional to 14,288.40, 21,400.20 and 9,039.60

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Solution

The fourth proportional to 14,288.40, 21,400.20 and 9,039.60 is: 13,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.40 : 21,400.20 = 9,039.60 : x
  2. Step 2: Convert to fraction form
    14,288.40/21,400.20 = 9,039.60/x
  3. Step 3: Cross multiply
    14,288.40x = 21,400.20 × 9,039.60
  4. Step 4: Simplify right side
    14,288.40x = 193,449,247.92
  5. Step 5: Solve for x
    x = 193,449,247.92/14,288.40
  6. Step 6: Final answer
    x = 13,538.90

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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.