Home / 11,209.23-15,468.79-6,429.36

Finding the Fourth Proportional to 11,209.23, 15,468.79 and 6,429.36

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Solution

The fourth proportional to 11,209.23, 15,468.79 and 6,429.36 is: 8,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.23 : 15,468.79 = 6,429.36 : x
  2. Step 2: Convert to fraction form
    11,209.23/15,468.79 = 6,429.36/x
  3. Step 3: Cross multiply
    11,209.23x = 15,468.79 × 6,429.36
  4. Step 4: Simplify right side
    11,209.23x = 99,454,403.60
  5. Step 5: Solve for x
    x = 99,454,403.60/11,209.23
  6. Step 6: Final answer
    x = 8,872.55

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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.