Home / 13,440.30-20,160.50-4,080.40

Finding the Fourth Proportional to 13,440.30, 20,160.50 and 4,080.40

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Solution

The fourth proportional to 13,440.30, 20,160.50 and 4,080.40 is: 6,120.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.30 : 20,160.50 = 4,080.40 : x
  2. Step 2: Convert to fraction form
    13,440.30/20,160.50 = 4,080.40/x
  3. Step 3: Cross multiply
    13,440.30x = 20,160.50 × 4,080.40
  4. Step 4: Simplify right side
    13,440.30x = 82,262,904.20
  5. Step 5: Solve for x
    x = 82,262,904.20/13,440.30
  6. Step 6: Final answer
    x = 6,120.62

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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.