Home / 20,767.72-31,139.61-14,201.86

Finding the Fourth Proportional to 20,767.72, 31,139.61 and 14,201.86

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Solution

The fourth proportional to 20,767.72, 31,139.61 and 14,201.86 is: 21,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.72 : 31,139.61 = 14,201.86 : x
  2. Step 2: Convert to fraction form
    20,767.72/31,139.61 = 14,201.86/x
  3. Step 3: Cross multiply
    20,767.72x = 31,139.61 × 14,201.86
  4. Step 4: Simplify right side
    20,767.72x = 442,240,381.67
  5. Step 5: Solve for x
    x = 442,240,381.67/20,767.72
  6. Step 6: Final answer
    x = 21,294.60

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