Home / 20,796.08-31,206.48-7,657.68

Finding the Fourth Proportional to 20,796.08, 31,206.48 and 7,657.68

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Solution

The fourth proportional to 20,796.08, 31,206.48 and 7,657.68 is: 11,491.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.08 : 31,206.48 = 7,657.68 : x
  2. Step 2: Convert to fraction form
    20,796.08/31,206.48 = 7,657.68/x
  3. Step 3: Cross multiply
    20,796.08x = 31,206.48 × 7,657.68
  4. Step 4: Simplify right side
    20,796.08x = 238,969,237.77
  5. Step 5: Solve for x
    x = 238,969,237.77/20,796.08
  6. Step 6: Final answer
    x = 11,491.07

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1.5x scale

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.