Home / 11,815.28-16,304.72-6,509.60

Finding the Fourth Proportional to 11,815.28, 16,304.72 and 6,509.60

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Solution

The fourth proportional to 11,815.28, 16,304.72 and 6,509.60 is: 8,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.28 : 16,304.72 = 6,509.60 : x
  2. Step 2: Convert to fraction form
    11,815.28/16,304.72 = 6,509.60/x
  3. Step 3: Cross multiply
    11,815.28x = 16,304.72 × 6,509.60
  4. Step 4: Simplify right side
    11,815.28x = 106,137,205.31
  5. Step 5: Solve for x
    x = 106,137,205.31/11,815.28
  6. Step 6: Final answer
    x = 8,983.05

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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.