Home / 13,102.08-18,081.12-7,797.60

Finding the Fourth Proportional to 13,102.08, 18,081.12 and 7,797.60

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Solution

The fourth proportional to 13,102.08, 18,081.12 and 7,797.60 is: 10,760.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.08 : 18,081.12 = 7,797.60 : x
  2. Step 2: Convert to fraction form
    13,102.08/18,081.12 = 7,797.60/x
  3. Step 3: Cross multiply
    13,102.08x = 18,081.12 × 7,797.60
  4. Step 4: Simplify right side
    13,102.08x = 140,989,341.31
  5. Step 5: Solve for x
    x = 140,989,341.31/13,102.08
  6. Step 6: Final answer
    x = 10,760.84

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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.