Home / 21,201.72-31,753.38-18,577.32

Finding the Fourth Proportional to 21,201.72, 31,753.38 and 18,577.32

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Solution

The fourth proportional to 21,201.72, 31,753.38 and 18,577.32 is: 27,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.72 : 31,753.38 = 18,577.32 : x
  2. Step 2: Convert to fraction form
    21,201.72/31,753.38 = 18,577.32/x
  3. Step 3: Cross multiply
    21,201.72x = 31,753.38 × 18,577.32
  4. Step 4: Simplify right side
    21,201.72x = 589,892,701.34
  5. Step 5: Solve for x
    x = 589,892,701.34/21,201.72
  6. Step 6: Final answer
    x = 27,822.87

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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.