Home / 21,172.38-29,218.79-11,740.94

Finding the Fourth Proportional to 21,172.38, 29,218.79 and 11,740.94

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Solution

The fourth proportional to 21,172.38, 29,218.79 and 11,740.94 is: 16,203.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.38 : 29,218.79 = 11,740.94 : x
  2. Step 2: Convert to fraction form
    21,172.38/29,218.79 = 11,740.94/x
  3. Step 3: Cross multiply
    21,172.38x = 29,218.79 × 11,740.94
  4. Step 4: Simplify right side
    21,172.38x = 343,056,060.26
  5. Step 5: Solve for x
    x = 343,056,060.26/21,172.38
  6. Step 6: Final answer
    x = 16,203.00

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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.