Home / 20,636.28-28,477.71-11,204.64

Finding the Fourth Proportional to 20,636.28, 28,477.71 and 11,204.64

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Solution

The fourth proportional to 20,636.28, 28,477.71 and 11,204.64 is: 15,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.28 : 28,477.71 = 11,204.64 : x
  2. Step 2: Convert to fraction form
    20,636.28/28,477.71 = 11,204.64/x
  3. Step 3: Cross multiply
    20,636.28x = 28,477.71 × 11,204.64
  4. Step 4: Simplify right side
    20,636.28x = 319,082,488.57
  5. Step 5: Solve for x
    x = 319,082,488.57/20,636.28
  6. Step 6: Final answer
    x = 15,462.21

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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.