Home / 20,809,811.10-31,214,716.65-20,384,658.30

Finding the Fourth Proportional to 20,809,811.10, 31,214,716.65 and 20,384,658.30

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Solution

The fourth proportional to 20,809,811.10, 31,214,716.65 and 20,384,658.30 is: 30,576,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,811.10 : 31,214,716.65 = 20,384,658.30 : x
  2. Step 2: Convert to fraction form
    20,809,811.10/31,214,716.65 = 20,384,658.30/x
  3. Step 3: Cross multiply
    20,809,811.10x = 31,214,716.65 × 20,384,658.30
  4. Step 4: Simplify right side
    20,809,811.10x = 636,301,332,841,570.75
  5. Step 5: Solve for x
    x = 636,301,332,841,570.75/20,809,811.10
  6. Step 6: Final answer
    x = 30,576,987.45

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Similar ratio
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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.