Home / 11,917.80-16,445.70-7,439.40

Finding the Fourth Proportional to 11,917.80, 16,445.70 and 7,439.40

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Solution

The fourth proportional to 11,917.80, 16,445.70 and 7,439.40 is: 10,265.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.80 : 16,445.70 = 7,439.40 : x
  2. Step 2: Convert to fraction form
    11,917.80/16,445.70 = 7,439.40/x
  3. Step 3: Cross multiply
    11,917.80x = 16,445.70 × 7,439.40
  4. Step 4: Simplify right side
    11,917.80x = 122,346,140.58
  5. Step 5: Solve for x
    x = 122,346,140.58/11,917.80
  6. Step 6: Final answer
    x = 10,265.83

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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.