Home / 13,630.32-20,459.79-12,080.25

Finding the Fourth Proportional to 13,630.32, 20,459.79 and 12,080.25

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Solution

The fourth proportional to 13,630.32, 20,459.79 and 12,080.25 is: 18,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.32 : 20,459.79 = 12,080.25 : x
  2. Step 2: Convert to fraction form
    13,630.32/20,459.79 = 12,080.25/x
  3. Step 3: Cross multiply
    13,630.32x = 20,459.79 × 12,080.25
  4. Step 4: Simplify right side
    13,630.32x = 247,159,378.15
  5. Step 5: Solve for x
    x = 247,159,378.15/13,630.32
  6. Step 6: Final answer
    x = 18,133.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.