Home / 21,685.60-29,922.42-12,253.96

Finding the Fourth Proportional to 21,685.60, 29,922.42 and 12,253.96

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Solution

The fourth proportional to 21,685.60, 29,922.42 and 12,253.96 is: 16,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.60 : 29,922.42 = 12,253.96 : x
  2. Step 2: Convert to fraction form
    21,685.60/29,922.42 = 12,253.96/x
  3. Step 3: Cross multiply
    21,685.60x = 29,922.42 × 12,253.96
  4. Step 4: Simplify right side
    21,685.60x = 366,668,137.78
  5. Step 5: Solve for x
    x = 366,668,137.78/21,685.60
  6. Step 6: Final answer
    x = 16,908.37

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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.