Home / 21,695.84-29,939-12,004.73

Finding the Fourth Proportional to 21,695.84, 29,939 and 12,004.73

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Solution

The fourth proportional to 21,695.84, 29,939 and 12,004.73 is: 16,565.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.84 : 29,939 = 12,004.73 : x
  2. Step 2: Convert to fraction form
    21,695.84/29,939 = 12,004.73/x
  3. Step 3: Cross multiply
    21,695.84x = 29,939 × 12,004.73
  4. Step 4: Simplify right side
    21,695.84x = 359,409,611.47
  5. Step 5: Solve for x
    x = 359,409,611.47/21,695.84
  6. Step 6: Final answer
    x = 16,565.83

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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.