Home / 20,817.85-31,237.02-9,725.32

Finding the Fourth Proportional to 20,817.85, 31,237.02 and 9,725.32

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Solution

The fourth proportional to 20,817.85, 31,237.02 and 9,725.32 is: 14,592.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.85 : 31,237.02 = 9,725.32 : x
  2. Step 2: Convert to fraction form
    20,817.85/31,237.02 = 9,725.32/x
  3. Step 3: Cross multiply
    20,817.85x = 31,237.02 × 9,725.32
  4. Step 4: Simplify right side
    20,817.85x = 303,789,859.16
  5. Step 5: Solve for x
    x = 303,789,859.16/20,817.85
  6. Step 6: Final answer
    x = 14,592.76

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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.