Home / 12,656.88-18,987.35-6,414.37

Finding the Fourth Proportional to 12,656.88, 18,987.35 and 6,414.37

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Solution

The fourth proportional to 12,656.88, 18,987.35 and 6,414.37 is: 9,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.88 : 18,987.35 = 6,414.37 : x
  2. Step 2: Convert to fraction form
    12,656.88/18,987.35 = 6,414.37/x
  3. Step 3: Cross multiply
    12,656.88x = 18,987.35 × 6,414.37
  4. Step 4: Simplify right side
    12,656.88x = 121,791,808.68
  5. Step 5: Solve for x
    x = 121,791,808.68/12,656.88
  6. Step 6: Final answer
    x = 9,622.58

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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.