Home / 20,610.40-30,917.76-6,756.16

Finding the Fourth Proportional to 20,610.40, 30,917.76 and 6,756.16

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Solution

The fourth proportional to 20,610.40, 30,917.76 and 6,756.16 is: 10,134.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.40 : 30,917.76 = 6,756.16 : x
  2. Step 2: Convert to fraction form
    20,610.40/30,917.76 = 6,756.16/x
  3. Step 3: Cross multiply
    20,610.40x = 30,917.76 × 6,756.16
  4. Step 4: Simplify right side
    20,610.40x = 208,885,333.40
  5. Step 5: Solve for x
    x = 208,885,333.40/20,610.40
  6. Step 6: Final answer
    x = 10,134.95

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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.