Home / 9,917.32-13,687.40-5,669.28

Finding the Fourth Proportional to 9,917.32, 13,687.40 and 5,669.28

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Solution

The fourth proportional to 9,917.32, 13,687.40 and 5,669.28 is: 7,824.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.32 : 13,687.40 = 5,669.28 : x
  2. Step 2: Convert to fraction form
    9,917.32/13,687.40 = 5,669.28/x
  3. Step 3: Cross multiply
    9,917.32x = 13,687.40 × 5,669.28
  4. Step 4: Simplify right side
    9,917.32x = 77,597,703.07
  5. Step 5: Solve for x
    x = 77,597,703.07/9,917.32
  6. Step 6: Final answer
    x = 7,824.46

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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.