Home / 21,668.48-29,906.16-12,236.72

Finding the Fourth Proportional to 21,668.48, 29,906.16 and 12,236.72

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Solution

The fourth proportional to 21,668.48, 29,906.16 and 12,236.72 is: 16,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.48 : 29,906.16 = 12,236.72 : x
  2. Step 2: Convert to fraction form
    21,668.48/29,906.16 = 12,236.72/x
  3. Step 3: Cross multiply
    21,668.48x = 29,906.16 × 12,236.72
  4. Step 4: Simplify right side
    21,668.48x = 365,953,306.20
  5. Step 5: Solve for x
    x = 365,953,306.20/21,668.48
  6. Step 6: Final answer
    x = 16,888.74

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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.