Home / 13,680.12-20,533.14-6,759.48

Finding the Fourth Proportional to 13,680.12, 20,533.14 and 6,759.48

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Solution

The fourth proportional to 13,680.12, 20,533.14 and 6,759.48 is: 10,145.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.12 : 20,533.14 = 6,759.48 : x
  2. Step 2: Convert to fraction form
    13,680.12/20,533.14 = 6,759.48/x
  3. Step 3: Cross multiply
    13,680.12x = 20,533.14 × 6,759.48
  4. Step 4: Simplify right side
    13,680.12x = 138,793,349.17
  5. Step 5: Solve for x
    x = 138,793,349.17/13,680.12
  6. Step 6: Final answer
    x = 10,145.62

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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.