Home / 21,613.40-29,828.94-12,182.84

Finding the Fourth Proportional to 21,613.40, 29,828.94 and 12,182.84

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Solution

The fourth proportional to 21,613.40, 29,828.94 and 12,182.84 is: 16,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.40 : 29,828.94 = 12,182.84 : x
  2. Step 2: Convert to fraction form
    21,613.40/29,828.94 = 12,182.84/x
  3. Step 3: Cross multiply
    21,613.40x = 29,828.94 × 12,182.84
  4. Step 4: Simplify right side
    21,613.40x = 363,401,203.39
  5. Step 5: Solve for x
    x = 363,401,203.39/21,613.40
  6. Step 6: Final answer
    x = 16,813.70

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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.