Home / 12,211.29-16,853.58-10,221.12

Finding the Fourth Proportional to 12,211.29, 16,853.58 and 10,221.12

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Solution

The fourth proportional to 12,211.29, 16,853.58 and 10,221.12 is: 14,106.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.29 : 16,853.58 = 10,221.12 : x
  2. Step 2: Convert to fraction form
    12,211.29/16,853.58 = 10,221.12/x
  3. Step 3: Cross multiply
    12,211.29x = 16,853.58 × 10,221.12
  4. Step 4: Simplify right side
    12,211.29x = 172,262,463.61
  5. Step 5: Solve for x
    x = 172,262,463.61/12,211.29
  6. Step 6: Final answer
    x = 14,106.82

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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.