Home / 21,623.41-29,840.21-11,687.41

Finding the Fourth Proportional to 21,623.41, 29,840.21 and 11,687.41

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Solution

The fourth proportional to 21,623.41, 29,840.21 and 11,687.41 is: 16,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.41 : 29,840.21 = 11,687.41 : x
  2. Step 2: Convert to fraction form
    21,623.41/29,840.21 = 11,687.41/x
  3. Step 3: Cross multiply
    21,623.41x = 29,840.21 × 11,687.41
  4. Step 4: Simplify right side
    21,623.41x = 348,754,648.77
  5. Step 5: Solve for x
    x = 348,754,648.77/21,623.41
  6. Step 6: Final answer
    x = 16,128.57

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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.