Home / 13,659.12-20,488.56-4,425.12

Finding the Fourth Proportional to 13,659.12, 20,488.56 and 4,425.12

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Solution

The fourth proportional to 13,659.12, 20,488.56 and 4,425.12 is: 6,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.12 : 20,488.56 = 4,425.12 : x
  2. Step 2: Convert to fraction form
    13,659.12/20,488.56 = 4,425.12/x
  3. Step 3: Cross multiply
    13,659.12x = 20,488.56 × 4,425.12
  4. Step 4: Simplify right side
    13,659.12x = 90,664,336.63
  5. Step 5: Solve for x
    x = 90,664,336.63/13,659.12
  6. Step 6: Final answer
    x = 6,637.64

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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.