Home / 21,726.12-29,981.94-11,790.12

Finding the Fourth Proportional to 21,726.12, 29,981.94 and 11,790.12

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Solution

The fourth proportional to 21,726.12, 29,981.94 and 11,790.12 is: 16,270.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.12 : 29,981.94 = 11,790.12 : x
  2. Step 2: Convert to fraction form
    21,726.12/29,981.94 = 11,790.12/x
  3. Step 3: Cross multiply
    21,726.12x = 29,981.94 × 11,790.12
  4. Step 4: Simplify right side
    21,726.12x = 353,490,670.43
  5. Step 5: Solve for x
    x = 353,490,670.43/21,726.12
  6. Step 6: Final answer
    x = 16,270.31

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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.