Home / 20,739.04-31,108.67-5,156.66

Finding the Fourth Proportional to 20,739.04, 31,108.67 and 5,156.66

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Solution

The fourth proportional to 20,739.04, 31,108.67 and 5,156.66 is: 7,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.04 : 31,108.67 = 5,156.66 : x
  2. Step 2: Convert to fraction form
    20,739.04/31,108.67 = 5,156.66/x
  3. Step 3: Cross multiply
    20,739.04x = 31,108.67 × 5,156.66
  4. Step 4: Simplify right side
    20,739.04x = 160,416,866.58
  5. Step 5: Solve for x
    x = 160,416,866.58/20,739.04
  6. Step 6: Final answer
    x = 7,735.02

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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.