Home / 20,646.28-28,493.71-11,694.36

Finding the Fourth Proportional to 20,646.28, 28,493.71 and 11,694.36

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Solution

The fourth proportional to 20,646.28, 28,493.71 and 11,694.36 is: 16,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.28 : 28,493.71 = 11,694.36 : x
  2. Step 2: Convert to fraction form
    20,646.28/28,493.71 = 11,694.36/x
  3. Step 3: Cross multiply
    20,646.28x = 28,493.71 × 11,694.36
  4. Step 4: Simplify right side
    20,646.28x = 333,215,619.81
  5. Step 5: Solve for x
    x = 333,215,619.81/20,646.28
  6. Step 6: Final answer
    x = 16,139.26

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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.