Home / 21,116.61-31,652.96-11,125.89

Finding the Fourth Proportional to 21,116.61, 31,652.96 and 11,125.89

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Solution

The fourth proportional to 21,116.61, 31,652.96 and 11,125.89 is: 16,677.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.61 : 31,652.96 = 11,125.89 : x
  2. Step 2: Convert to fraction form
    21,116.61/31,652.96 = 11,125.89/x
  3. Step 3: Cross multiply
    21,116.61x = 31,652.96 × 11,125.89
  4. Step 4: Simplify right side
    21,116.61x = 352,167,295.50
  5. Step 5: Solve for x
    x = 352,167,295.50/21,116.61
  6. Step 6: Final answer
    x = 16,677.26

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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.