Home / 21,257.64-29,320.38-14,171.76

Finding the Fourth Proportional to 21,257.64, 29,320.38 and 14,171.76

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Solution

The fourth proportional to 21,257.64, 29,320.38 and 14,171.76 is: 19,546.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.64 : 29,320.38 = 14,171.76 : x
  2. Step 2: Convert to fraction form
    21,257.64/29,320.38 = 14,171.76/x
  3. Step 3: Cross multiply
    21,257.64x = 29,320.38 × 14,171.76
  4. Step 4: Simplify right side
    21,257.64x = 415,521,388.47
  5. Step 5: Solve for x
    x = 415,521,388.47/21,257.64
  6. Step 6: Final answer
    x = 19,546.92

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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.