Home / 20,488.30-30,710.85-11,704.30

Finding the Fourth Proportional to 20,488.30, 30,710.85 and 11,704.30

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Solution

The fourth proportional to 20,488.30, 30,710.85 and 11,704.30 is: 17,544.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.30 : 30,710.85 = 11,704.30 : x
  2. Step 2: Convert to fraction form
    20,488.30/30,710.85 = 11,704.30/x
  3. Step 3: Cross multiply
    20,488.30x = 30,710.85 × 11,704.30
  4. Step 4: Simplify right side
    20,488.30x = 359,449,001.66
  5. Step 5: Solve for x
    x = 359,449,001.66/20,488.30
  6. Step 6: Final answer
    x = 17,544.11

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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.