Home / 21,486.67-29,651.13-11,925.99

Finding the Fourth Proportional to 21,486.67, 29,651.13 and 11,925.99

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Solution

The fourth proportional to 21,486.67, 29,651.13 and 11,925.99 is: 16,457.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.67 : 29,651.13 = 11,925.99 : x
  2. Step 2: Convert to fraction form
    21,486.67/29,651.13 = 11,925.99/x
  3. Step 3: Cross multiply
    21,486.67x = 29,651.13 × 11,925.99
  4. Step 4: Simplify right side
    21,486.67x = 353,619,161.66
  5. Step 5: Solve for x
    x = 353,619,161.66/21,486.67
  6. Step 6: Final answer
    x = 16,457.61

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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.