Home / 14,290.78-21,440.58-6,399.94

Finding the Fourth Proportional to 14,290.78, 21,440.58 and 6,399.94

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Solution

The fourth proportional to 14,290.78, 21,440.58 and 6,399.94 is: 9,601.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.78 : 21,440.58 = 6,399.94 : x
  2. Step 2: Convert to fraction form
    14,290.78/21,440.58 = 6,399.94/x
  3. Step 3: Cross multiply
    14,290.78x = 21,440.58 × 6,399.94
  4. Step 4: Simplify right side
    14,290.78x = 137,218,425.57
  5. Step 5: Solve for x
    x = 137,218,425.57/14,290.78
  6. Step 6: Final answer
    x = 9,601.88

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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.