Home / 11,705.76-16,162.40-7,235.64

Finding the Fourth Proportional to 11,705.76, 16,162.40 and 7,235.64

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Solution

The fourth proportional to 11,705.76, 16,162.40 and 7,235.64 is: 9,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.76 : 16,162.40 = 7,235.64 : x
  2. Step 2: Convert to fraction form
    11,705.76/16,162.40 = 7,235.64/x
  3. Step 3: Cross multiply
    11,705.76x = 16,162.40 × 7,235.64
  4. Step 4: Simplify right side
    11,705.76x = 116,945,307.94
  5. Step 5: Solve for x
    x = 116,945,307.94/11,705.76
  6. Step 6: Final answer
    x = 9,990.41

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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.