Home / 21,284.28-29,372.34-11,855.04

Finding the Fourth Proportional to 21,284.28, 29,372.34 and 11,855.04

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Solution

The fourth proportional to 21,284.28, 29,372.34 and 11,855.04 is: 16,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.28 : 29,372.34 = 11,855.04 : x
  2. Step 2: Convert to fraction form
    21,284.28/29,372.34 = 11,855.04/x
  3. Step 3: Cross multiply
    21,284.28x = 29,372.34 × 11,855.04
  4. Step 4: Simplify right side
    21,284.28x = 348,210,265.59
  5. Step 5: Solve for x
    x = 348,210,265.59/21,284.28
  6. Step 6: Final answer
    x = 16,359.97

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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.