Home / 13,784.50-20,680.21-4,425.35

Finding the Fourth Proportional to 13,784.50, 20,680.21 and 4,425.35

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Solution

The fourth proportional to 13,784.50, 20,680.21 and 4,425.35 is: 6,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.50 : 20,680.21 = 4,425.35 : x
  2. Step 2: Convert to fraction form
    13,784.50/20,680.21 = 4,425.35/x
  3. Step 3: Cross multiply
    13,784.50x = 20,680.21 × 4,425.35
  4. Step 4: Simplify right side
    13,784.50x = 91,517,167.32
  5. Step 5: Solve for x
    x = 91,517,167.32/13,784.50
  6. Step 6: Final answer
    x = 6,639.14

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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.