Home / 21,309.21-31,936.05-11,436.93

Finding the Fourth Proportional to 21,309.21, 31,936.05 and 11,436.93

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Solution

The fourth proportional to 21,309.21, 31,936.05 and 11,436.93 is: 17,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.21 : 31,936.05 = 11,436.93 : x
  2. Step 2: Convert to fraction form
    21,309.21/31,936.05 = 11,436.93/x
  3. Step 3: Cross multiply
    21,309.21x = 31,936.05 × 11,436.93
  4. Step 4: Simplify right side
    21,309.21x = 365,250,368.33
  5. Step 5: Solve for x
    x = 365,250,368.33/21,309.21
  6. Step 6: Final answer
    x = 17,140.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.