Home / 21,257.72-29,335.65-11,826.28

Finding the Fourth Proportional to 21,257.72, 29,335.65 and 11,826.28

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Solution

The fourth proportional to 21,257.72, 29,335.65 and 11,826.28 is: 16,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.72 : 29,335.65 = 11,826.28 : x
  2. Step 2: Convert to fraction form
    21,257.72/29,335.65 = 11,826.28/x
  3. Step 3: Cross multiply
    21,257.72x = 29,335.65 × 11,826.28
  4. Step 4: Simplify right side
    21,257.72x = 346,931,669.73
  5. Step 5: Solve for x
    x = 346,931,669.73/21,257.72
  6. Step 6: Final answer
    x = 16,320.27

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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.