Home / 11,811.60-16,310.40-7,342.92

Finding the Fourth Proportional to 11,811.60, 16,310.40 and 7,342.92

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Solution

The fourth proportional to 11,811.60, 16,310.40 and 7,342.92 is: 10,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.60 : 16,310.40 = 7,342.92 : x
  2. Step 2: Convert to fraction form
    11,811.60/16,310.40 = 7,342.92/x
  3. Step 3: Cross multiply
    11,811.60x = 16,310.40 × 7,342.92
  4. Step 4: Simplify right side
    11,811.60x = 119,765,962.37
  5. Step 5: Solve for x
    x = 119,765,962.37/11,811.60
  6. Step 6: Final answer
    x = 10,139.69

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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.