Home / 9,821.45-13,554.08-5,789.48

Finding the Fourth Proportional to 9,821.45, 13,554.08 and 5,789.48

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Solution

The fourth proportional to 9,821.45, 13,554.08 and 5,789.48 is: 7,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,821.45 : 13,554.08 = 5,789.48 : x
  2. Step 2: Convert to fraction form
    9,821.45/13,554.08 = 5,789.48/x
  3. Step 3: Cross multiply
    9,821.45x = 13,554.08 × 5,789.48
  4. Step 4: Simplify right side
    9,821.45x = 78,471,032.64
  5. Step 5: Solve for x
    x = 78,471,032.64/9,821.45
  6. Step 6: Final answer
    x = 7,989.76

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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.