Home / 18,711.20-28,059.06-7,610.36

Finding the Fourth Proportional to 18,711.20, 28,059.06 and 7,610.36

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Solution

The fourth proportional to 18,711.20, 28,059.06 and 7,610.36 is: 11,412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.20 : 28,059.06 = 7,610.36 : x
  2. Step 2: Convert to fraction form
    18,711.20/28,059.06 = 7,610.36/x
  3. Step 3: Cross multiply
    18,711.20x = 28,059.06 × 7,610.36
  4. Step 4: Simplify right side
    18,711.20x = 213,539,393.30
  5. Step 5: Solve for x
    x = 213,539,393.30/18,711.20
  6. Step 6: Final answer
    x = 11,412.38

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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.