Home / 13,440.16-20,160.28-4,080.26

Finding the Fourth Proportional to 13,440.16, 20,160.28 and 4,080.26

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Solution

The fourth proportional to 13,440.16, 20,160.28 and 4,080.26 is: 6,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.16 : 20,160.28 = 4,080.26 : x
  2. Step 2: Convert to fraction form
    13,440.16/20,160.28 = 4,080.26/x
  3. Step 3: Cross multiply
    13,440.16x = 20,160.28 × 4,080.26
  4. Step 4: Simplify right side
    13,440.16x = 82,259,083.27
  5. Step 5: Solve for x
    x = 82,259,083.27/13,440.16
  6. Step 6: Final answer
    x = 6,120.40

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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.