Home / 21,429.05-32,148.68-8,942.14

Finding the Fourth Proportional to 21,429.05, 32,148.68 and 8,942.14

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Solution

The fourth proportional to 21,429.05, 32,148.68 and 8,942.14 is: 13,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.05 : 32,148.68 = 8,942.14 : x
  2. Step 2: Convert to fraction form
    21,429.05/32,148.68 = 8,942.14/x
  3. Step 3: Cross multiply
    21,429.05x = 32,148.68 × 8,942.14
  4. Step 4: Simplify right side
    21,429.05x = 287,477,872.29
  5. Step 5: Solve for x
    x = 287,477,872.29/21,429.05
  6. Step 6: Final answer
    x = 13,415.33

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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.