Home / 21,635.30-29,855.39-12,074.57

Finding the Fourth Proportional to 21,635.30, 29,855.39 and 12,074.57

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Solution

The fourth proportional to 21,635.30, 29,855.39 and 12,074.57 is: 16,662.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.30 : 29,855.39 = 12,074.57 : x
  2. Step 2: Convert to fraction form
    21,635.30/29,855.39 = 12,074.57/x
  3. Step 3: Cross multiply
    21,635.30x = 29,855.39 × 12,074.57
  4. Step 4: Simplify right side
    21,635.30x = 360,490,898.74
  5. Step 5: Solve for x
    x = 360,490,898.74/21,635.30
  6. Step 6: Final answer
    x = 16,662.16

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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.