Home / 14,396.60-19,863.18-9,921.56

Finding the Fourth Proportional to 14,396.60, 19,863.18 and 9,921.56

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Solution

The fourth proportional to 14,396.60, 19,863.18 and 9,921.56 is: 13,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,396.60 : 19,863.18 = 9,921.56 : x
  2. Step 2: Convert to fraction form
    14,396.60/19,863.18 = 9,921.56/x
  3. Step 3: Cross multiply
    14,396.60x = 19,863.18 × 9,921.56
  4. Step 4: Simplify right side
    14,396.60x = 197,073,732.16
  5. Step 5: Solve for x
    x = 197,073,732.16/14,396.60
  6. Step 6: Final answer
    x = 13,688.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.