Home / 9,989.30-13,785.08-5,512.95

Finding the Fourth Proportional to 9,989.30, 13,785.08 and 5,512.95

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Solution

The fourth proportional to 9,989.30, 13,785.08 and 5,512.95 is: 7,607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.30 : 13,785.08 = 5,512.95 : x
  2. Step 2: Convert to fraction form
    9,989.30/13,785.08 = 5,512.95/x
  3. Step 3: Cross multiply
    9,989.30x = 13,785.08 × 5,512.95
  4. Step 4: Simplify right side
    9,989.30x = 75,996,429.22
  5. Step 5: Solve for x
    x = 75,996,429.22/9,989.30
  6. Step 6: Final answer
    x = 7,607.79

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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.