Home / 21,225.44-29,286.36-12,272.72

Finding the Fourth Proportional to 21,225.44, 29,286.36 and 12,272.72

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Solution

The fourth proportional to 21,225.44, 29,286.36 and 12,272.72 is: 16,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.44 : 29,286.36 = 12,272.72 : x
  2. Step 2: Convert to fraction form
    21,225.44/29,286.36 = 12,272.72/x
  3. Step 3: Cross multiply
    21,225.44x = 29,286.36 × 12,272.72
  4. Step 4: Simplify right side
    21,225.44x = 359,423,149.67
  5. Step 5: Solve for x
    x = 359,423,149.67/21,225.44
  6. Step 6: Final answer
    x = 16,933.60

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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.