Home / 21,712.68-29,962.98-12,152.70

Finding the Fourth Proportional to 21,712.68, 29,962.98 and 12,152.70

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Solution

The fourth proportional to 21,712.68, 29,962.98 and 12,152.70 is: 16,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.68 : 29,962.98 = 12,152.70 : x
  2. Step 2: Convert to fraction form
    21,712.68/29,962.98 = 12,152.70/x
  3. Step 3: Cross multiply
    21,712.68x = 29,962.98 × 12,152.70
  4. Step 4: Simplify right side
    21,712.68x = 364,131,107.05
  5. Step 5: Solve for x
    x = 364,131,107.05/21,712.68
  6. Step 6: Final answer
    x = 16,770.44

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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.