Home / 13,690.90-20,536.21-4,330.92

Finding the Fourth Proportional to 13,690.90, 20,536.21 and 4,330.92

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Solution

The fourth proportional to 13,690.90, 20,536.21 and 4,330.92 is: 6,496.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.90 : 20,536.21 = 4,330.92 : x
  2. Step 2: Convert to fraction form
    13,690.90/20,536.21 = 4,330.92/x
  3. Step 3: Cross multiply
    13,690.90x = 20,536.21 × 4,330.92
  4. Step 4: Simplify right side
    13,690.90x = 88,940,682.61
  5. Step 5: Solve for x
    x = 88,940,682.61/13,690.90
  6. Step 6: Final answer
    x = 6,496.34

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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.