Home / 20,971.64-31,360.24-16,238

Finding the Fourth Proportional to 20,971.64, 31,360.24 and 16,238

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Solution

The fourth proportional to 20,971.64, 31,360.24 and 16,238 is: 24,281.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.64 : 31,360.24 = 16,238 : x
  2. Step 2: Convert to fraction form
    20,971.64/31,360.24 = 16,238/x
  3. Step 3: Cross multiply
    20,971.64x = 31,360.24 × 16,238
  4. Step 4: Simplify right side
    20,971.64x = 509,227,577.12
  5. Step 5: Solve for x
    x = 509,227,577.12/20,971.64
  6. Step 6: Final answer
    x = 24,281.72

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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.