Home / 9,896.67-13,657.11-5,420.33

Finding the Fourth Proportional to 9,896.67, 13,657.11 and 5,420.33

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Solution

The fourth proportional to 9,896.67, 13,657.11 and 5,420.33 is: 7,479.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,896.67 : 13,657.11 = 5,420.33 : x
  2. Step 2: Convert to fraction form
    9,896.67/13,657.11 = 5,420.33/x
  3. Step 3: Cross multiply
    9,896.67x = 13,657.11 × 5,420.33
  4. Step 4: Simplify right side
    9,896.67x = 74,025,974.76
  5. Step 5: Solve for x
    x = 74,025,974.76/9,896.67
  6. Step 6: Final answer
    x = 7,479.89

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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.