Home / 21,211.80-31,827.15-10,830.84

Finding the Fourth Proportional to 21,211.80, 31,827.15 and 10,830.84

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Solution

The fourth proportional to 21,211.80, 31,827.15 and 10,830.84 is: 16,251.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.80 : 31,827.15 = 10,830.84 : x
  2. Step 2: Convert to fraction form
    21,211.80/31,827.15 = 10,830.84/x
  3. Step 3: Cross multiply
    21,211.80x = 31,827.15 × 10,830.84
  4. Step 4: Simplify right side
    21,211.80x = 344,714,769.31
  5. Step 5: Solve for x
    x = 344,714,769.31/21,211.80
  6. Step 6: Final answer
    x = 16,251.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.