Home / 9,989.16-13,783.96-5,512.36

Finding the Fourth Proportional to 9,989.16, 13,783.96 and 5,512.36

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Solution

The fourth proportional to 9,989.16, 13,783.96 and 5,512.36 is: 7,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.16 : 13,783.96 = 5,512.36 : x
  2. Step 2: Convert to fraction form
    9,989.16/13,783.96 = 5,512.36/x
  3. Step 3: Cross multiply
    9,989.16x = 13,783.96 × 5,512.36
  4. Step 4: Simplify right side
    9,989.16x = 75,982,149.75
  5. Step 5: Solve for x
    x = 75,982,149.75/9,989.16
  6. Step 6: Final answer
    x = 7,606.46

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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.