Home / 11,705.40-16,148.94-7,221.39

Finding the Fourth Proportional to 11,705.40, 16,148.94 and 7,221.39

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Solution

The fourth proportional to 11,705.40, 16,148.94 and 7,221.39 is: 9,962.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.40 : 16,148.94 = 7,221.39 : x
  2. Step 2: Convert to fraction form
    11,705.40/16,148.94 = 7,221.39/x
  3. Step 3: Cross multiply
    11,705.40x = 16,148.94 × 7,221.39
  4. Step 4: Simplify right side
    11,705.40x = 116,617,793.83
  5. Step 5: Solve for x
    x = 116,617,793.83/11,705.40
  6. Step 6: Final answer
    x = 9,962.73

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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.