Home / 21,068.26-31,611.61-9,982.86

Finding the Fourth Proportional to 21,068.26, 31,611.61 and 9,982.86

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Solution

The fourth proportional to 21,068.26, 31,611.61 and 9,982.86 is: 14,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.26 : 31,611.61 = 9,982.86 : x
  2. Step 2: Convert to fraction form
    21,068.26/31,611.61 = 9,982.86/x
  3. Step 3: Cross multiply
    21,068.26x = 31,611.61 × 9,982.86
  4. Step 4: Simplify right side
    21,068.26x = 315,574,277.00
  5. Step 5: Solve for x
    x = 315,574,277.00/21,068.26
  6. Step 6: Final answer
    x = 14,978.66

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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.