Home / 18,760.47-28,140.75-7,667.19

Finding the Fourth Proportional to 18,760.47, 28,140.75 and 7,667.19

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Solution

The fourth proportional to 18,760.47, 28,140.75 and 7,667.19 is: 11,500.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.47 : 28,140.75 = 7,667.19 : x
  2. Step 2: Convert to fraction form
    18,760.47/28,140.75 = 7,667.19/x
  3. Step 3: Cross multiply
    18,760.47x = 28,140.75 × 7,667.19
  4. Step 4: Simplify right side
    18,760.47x = 215,760,476.99
  5. Step 5: Solve for x
    x = 215,760,476.99/18,760.47
  6. Step 6: Final answer
    x = 11,500.80

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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.