Home / 21,257.28-29,337.24-11,826.72

Finding the Fourth Proportional to 21,257.28, 29,337.24 and 11,826.72

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Solution

The fourth proportional to 21,257.28, 29,337.24 and 11,826.72 is: 16,322.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.28 : 29,337.24 = 11,826.72 : x
  2. Step 2: Convert to fraction form
    21,257.28/29,337.24 = 11,826.72/x
  3. Step 3: Cross multiply
    21,257.28x = 29,337.24 × 11,826.72
  4. Step 4: Simplify right side
    21,257.28x = 346,963,323.05
  5. Step 5: Solve for x
    x = 346,963,323.05/21,257.28
  6. Step 6: Final answer
    x = 16,322.09

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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.