Home / 28,456.11-42,679.26-7,674.75

Finding the Fourth Proportional to 28,456.11, 42,679.26 and 7,674.75

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Solution

The fourth proportional to 28,456.11, 42,679.26 and 7,674.75 is: 11,510.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.11 : 42,679.26 = 7,674.75 : x
  2. Step 2: Convert to fraction form
    28,456.11/42,679.26 = 7,674.75/x
  3. Step 3: Cross multiply
    28,456.11x = 42,679.26 × 7,674.75
  4. Step 4: Simplify right side
    28,456.11x = 327,552,650.69
  5. Step 5: Solve for x
    x = 327,552,650.69/28,456.11
  6. Step 6: Final answer
    x = 11,510.80

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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.