Home / 20,320.88-30,494.28-8,634.10

Finding the Fourth Proportional to 20,320.88, 30,494.28 and 8,634.10

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Solution

The fourth proportional to 20,320.88, 30,494.28 and 8,634.10 is: 12,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.88 : 30,494.28 = 8,634.10 : x
  2. Step 2: Convert to fraction form
    20,320.88/30,494.28 = 8,634.10/x
  3. Step 3: Cross multiply
    20,320.88x = 30,494.28 × 8,634.10
  4. Step 4: Simplify right side
    20,320.88x = 263,290,701.07
  5. Step 5: Solve for x
    x = 263,290,701.07/20,320.88
  6. Step 6: Final answer
    x = 12,956.66

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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.