Home / 9,989.03-13,785.20-5,513.06

Finding the Fourth Proportional to 9,989.03, 13,785.20 and 5,513.06

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Solution

The fourth proportional to 9,989.03, 13,785.20 and 5,513.06 is: 7,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.03 : 13,785.20 = 5,513.06 : x
  2. Step 2: Convert to fraction form
    9,989.03/13,785.20 = 5,513.06/x
  3. Step 3: Cross multiply
    9,989.03x = 13,785.20 × 5,513.06
  4. Step 4: Simplify right side
    9,989.03x = 75,998,538.22
  5. Step 5: Solve for x
    x = 75,998,538.22/9,989.03
  6. Step 6: Final answer
    x = 7,608.20

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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.