Home / 11,631.12-16,054.20-7,155.60

Finding the Fourth Proportional to 11,631.12, 16,054.20 and 7,155.60

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Solution

The fourth proportional to 11,631.12, 16,054.20 and 7,155.60 is: 9,876.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,631.12 : 16,054.20 = 7,155.60 : x
  2. Step 2: Convert to fraction form
    11,631.12/16,054.20 = 7,155.60/x
  3. Step 3: Cross multiply
    11,631.12x = 16,054.20 × 7,155.60
  4. Step 4: Simplify right side
    11,631.12x = 114,877,433.52
  5. Step 5: Solve for x
    x = 114,877,433.52/11,631.12
  6. Step 6: Final answer
    x = 9,876.73

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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.