Home / 11,209.80-15,452.63-9,216.90

Finding the Fourth Proportional to 11,209.80, 15,452.63 and 9,216.90

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Solution

The fourth proportional to 11,209.80, 15,452.63 and 9,216.90 is: 12,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.80 : 15,452.63 = 9,216.90 : x
  2. Step 2: Convert to fraction form
    11,209.80/15,452.63 = 9,216.90/x
  3. Step 3: Cross multiply
    11,209.80x = 15,452.63 × 9,216.90
  4. Step 4: Simplify right side
    11,209.80x = 142,425,299.36
  5. Step 5: Solve for x
    x = 142,425,299.36/11,209.80
  6. Step 6: Final answer
    x = 12,705.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.