Home / 21,101.01-31,623.57-11,219.01

Finding the Fourth Proportional to 21,101.01, 31,623.57 and 11,219.01

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Solution

The fourth proportional to 21,101.01, 31,623.57 and 11,219.01 is: 16,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.01 : 31,623.57 = 11,219.01 : x
  2. Step 2: Convert to fraction form
    21,101.01/31,623.57 = 11,219.01/x
  3. Step 3: Cross multiply
    21,101.01x = 31,623.57 × 11,219.01
  4. Step 4: Simplify right side
    21,101.01x = 354,785,148.07
  5. Step 5: Solve for x
    x = 354,785,148.07/21,101.01
  6. Step 6: Final answer
    x = 16,813.66

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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.