Home / 18,760.25-28,140.42-7,666.94

Finding the Fourth Proportional to 18,760.25, 28,140.42 and 7,666.94

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Solution

The fourth proportional to 18,760.25, 28,140.42 and 7,666.94 is: 11,500.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.25 : 28,140.42 = 7,666.94 : x
  2. Step 2: Convert to fraction form
    18,760.25/28,140.42 = 7,666.94/x
  3. Step 3: Cross multiply
    18,760.25x = 28,140.42 × 7,666.94
  4. Step 4: Simplify right side
    18,760.25x = 215,750,809.40
  5. Step 5: Solve for x
    x = 215,750,809.40/18,760.25
  6. Step 6: Final answer
    x = 11,500.42

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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.