Home / 21,277.61-29,361.94-11,715.63

Finding the Fourth Proportional to 21,277.61, 29,361.94 and 11,715.63

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Solution

The fourth proportional to 21,277.61, 29,361.94 and 11,715.63 is: 16,166.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.61 : 29,361.94 = 11,715.63 : x
  2. Step 2: Convert to fraction form
    21,277.61/29,361.94 = 11,715.63/x
  3. Step 3: Cross multiply
    21,277.61x = 29,361.94 × 11,715.63
  4. Step 4: Simplify right side
    21,277.61x = 343,993,625.12
  5. Step 5: Solve for x
    x = 343,993,625.12/21,277.61
  6. Step 6: Final answer
    x = 16,166.93

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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.