Home / 21,447.72-29,560.88-14,264.79

Finding the Fourth Proportional to 21,447.72, 29,560.88 and 14,264.79

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Solution

The fourth proportional to 21,447.72, 29,560.88 and 14,264.79 is: 19,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.72 : 29,560.88 = 14,264.79 : x
  2. Step 2: Convert to fraction form
    21,447.72/29,560.88 = 14,264.79/x
  3. Step 3: Cross multiply
    21,447.72x = 29,560.88 × 14,264.79
  4. Step 4: Simplify right side
    21,447.72x = 421,679,745.42
  5. Step 5: Solve for x
    x = 421,679,745.42/21,447.72
  6. Step 6: Final answer
    x = 19,660.82

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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.