Home / 11,240.40-16,849.80-8,740.20

Finding the Fourth Proportional to 11,240.40, 16,849.80 and 8,740.20

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Solution

The fourth proportional to 11,240.40, 16,849.80 and 8,740.20 is: 13,101.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.40 : 16,849.80 = 8,740.20 : x
  2. Step 2: Convert to fraction form
    11,240.40/16,849.80 = 8,740.20/x
  3. Step 3: Cross multiply
    11,240.40x = 16,849.80 × 8,740.20
  4. Step 4: Simplify right side
    11,240.40x = 147,270,621.96
  5. Step 5: Solve for x
    x = 147,270,621.96/11,240.40
  6. Step 6: Final answer
    x = 13,101.90

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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.