Home / 9,989.25-13,784.58-5,512.89

Finding the Fourth Proportional to 9,989.25, 13,784.58 and 5,512.89

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Solution

The fourth proportional to 9,989.25, 13,784.58 and 5,512.89 is: 7,607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.25 : 13,784.58 = 5,512.89 : x
  2. Step 2: Convert to fraction form
    9,989.25/13,784.58 = 5,512.89/x
  3. Step 3: Cross multiply
    9,989.25x = 13,784.58 × 5,512.89
  4. Step 4: Simplify right side
    9,989.25x = 75,992,873.24
  5. Step 5: Solve for x
    x = 75,992,873.24/9,989.25
  6. Step 6: Final answer
    x = 7,607.47

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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.