Home / 20,672.62-31,008.22-8,985.84

Finding the Fourth Proportional to 20,672.62, 31,008.22 and 8,985.84

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Solution

The fourth proportional to 20,672.62, 31,008.22 and 8,985.84 is: 13,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.62 : 31,008.22 = 8,985.84 : x
  2. Step 2: Convert to fraction form
    20,672.62/31,008.22 = 8,985.84/x
  3. Step 3: Cross multiply
    20,672.62x = 31,008.22 × 8,985.84
  4. Step 4: Simplify right side
    20,672.62x = 278,634,903.60
  5. Step 5: Solve for x
    x = 278,634,903.60/20,672.62
  6. Step 6: Final answer
    x = 13,478.45

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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.