Home / 14,431.36-21,628.20-7,405.42

Finding the Fourth Proportional to 14,431.36, 21,628.20 and 7,405.42

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Solution

The fourth proportional to 14,431.36, 21,628.20 and 7,405.42 is: 11,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.36 : 21,628.20 = 7,405.42 : x
  2. Step 2: Convert to fraction form
    14,431.36/21,628.20 = 7,405.42/x
  3. Step 3: Cross multiply
    14,431.36x = 21,628.20 × 7,405.42
  4. Step 4: Simplify right side
    14,431.36x = 160,165,904.84
  5. Step 5: Solve for x
    x = 160,165,904.84/14,431.36
  6. Step 6: Final answer
    x = 11,098.46

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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.