Home / 21,429.38-32,145.57-6,636.38

Finding the Fourth Proportional to 21,429.38, 32,145.57 and 6,636.38

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Solution

The fourth proportional to 21,429.38, 32,145.57 and 6,636.38 is: 9,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.38 : 32,145.57 = 6,636.38 : x
  2. Step 2: Convert to fraction form
    21,429.38/32,145.57 = 6,636.38/x
  3. Step 3: Cross multiply
    21,429.38x = 32,145.57 × 6,636.38
  4. Step 4: Simplify right side
    21,429.38x = 213,330,217.84
  5. Step 5: Solve for x
    x = 213,330,217.84/21,429.38
  6. Step 6: Final answer
    x = 9,955.03

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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.