Home / 21,738.11-29,998.44-12,306.59

Finding the Fourth Proportional to 21,738.11, 29,998.44 and 12,306.59

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Solution

The fourth proportional to 21,738.11, 29,998.44 and 12,306.59 is: 16,983.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.11 : 29,998.44 = 12,306.59 : x
  2. Step 2: Convert to fraction form
    21,738.11/29,998.44 = 12,306.59/x
  3. Step 3: Cross multiply
    21,738.11x = 29,998.44 × 12,306.59
  4. Step 4: Simplify right side
    21,738.11x = 369,178,440.19
  5. Step 5: Solve for x
    x = 369,178,440.19/21,738.11
  6. Step 6: Final answer
    x = 16,983.01

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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.