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Finding the Fourth Proportional to 21,613.63, 29,827.04 and 12,182.19

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Solution

The fourth proportional to 21,613.63, 29,827.04 and 12,182.19 is: 16,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.63 : 29,827.04 = 12,182.19 : x
  2. Step 2: Convert to fraction form
    21,613.63/29,827.04 = 12,182.19/x
  3. Step 3: Cross multiply
    21,613.63x = 29,827.04 × 12,182.19
  4. Step 4: Simplify right side
    21,613.63x = 363,358,668.42
  5. Step 5: Solve for x
    x = 363,358,668.42/21,613.63
  6. Step 6: Final answer
    x = 16,811.55

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Double scale
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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.