Home / 11,280.12-16,891.02-7,780.92

Finding the Fourth Proportional to 11,280.12, 16,891.02 and 7,780.92

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Solution

The fourth proportional to 11,280.12, 16,891.02 and 7,780.92 is: 11,651.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.12 : 16,891.02 = 7,780.92 : x
  2. Step 2: Convert to fraction form
    11,280.12/16,891.02 = 7,780.92/x
  3. Step 3: Cross multiply
    11,280.12x = 16,891.02 × 7,780.92
  4. Step 4: Simplify right side
    11,280.12x = 131,427,675.34
  5. Step 5: Solve for x
    x = 131,427,675.34/11,280.12
  6. Step 6: Final answer
    x = 11,651.27

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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.