Home / 20,417.40-30,611.62-7,926.90

Finding the Fourth Proportional to 20,417.40, 30,611.62 and 7,926.90

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Solution

The fourth proportional to 20,417.40, 30,611.62 and 7,926.90 is: 11,884.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.40 : 30,611.62 = 7,926.90 : x
  2. Step 2: Convert to fraction form
    20,417.40/30,611.62 = 7,926.90/x
  3. Step 3: Cross multiply
    20,417.40x = 30,611.62 × 7,926.90
  4. Step 4: Simplify right side
    20,417.40x = 242,655,145.69
  5. Step 5: Solve for x
    x = 242,655,145.69/20,417.40
  6. Step 6: Final answer
    x = 11,884.72

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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.