Home / 13,445.66-20,168.39-3,585.74

Finding the Fourth Proportional to 13,445.66, 20,168.39 and 3,585.74

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Solution

The fourth proportional to 13,445.66, 20,168.39 and 3,585.74 is: 5,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.66 : 20,168.39 = 3,585.74 : x
  2. Step 2: Convert to fraction form
    13,445.66/20,168.39 = 3,585.74/x
  3. Step 3: Cross multiply
    13,445.66x = 20,168.39 × 3,585.74
  4. Step 4: Simplify right side
    13,445.66x = 72,318,510.88
  5. Step 5: Solve for x
    x = 72,318,510.88/13,445.66
  6. Step 6: Final answer
    x = 5,378.58

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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.