Home / 9,983.40-13,781.52-6,448.34

Finding the Fourth Proportional to 9,983.40, 13,781.52 and 6,448.34

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Solution

The fourth proportional to 9,983.40, 13,781.52 and 6,448.34 is: 8,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,983.40 : 13,781.52 = 6,448.34 : x
  2. Step 2: Convert to fraction form
    9,983.40/13,781.52 = 6,448.34/x
  3. Step 3: Cross multiply
    9,983.40x = 13,781.52 × 6,448.34
  4. Step 4: Simplify right side
    9,983.40x = 88,867,857.77
  5. Step 5: Solve for x
    x = 88,867,857.77/9,983.40
  6. Step 6: Final answer
    x = 8,901.56

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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.