Home / 20,239.40-30,360.90-5,447.98

Finding the Fourth Proportional to 20,239.40, 30,360.90 and 5,447.98

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Solution

The fourth proportional to 20,239.40, 30,360.90 and 5,447.98 is: 8,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.40 : 30,360.90 = 5,447.98 : x
  2. Step 2: Convert to fraction form
    20,239.40/30,360.90 = 5,447.98/x
  3. Step 3: Cross multiply
    20,239.40x = 30,360.90 × 5,447.98
  4. Step 4: Simplify right side
    20,239.40x = 165,405,575.98
  5. Step 5: Solve for x
    x = 165,405,575.98/20,239.40
  6. Step 6: Final answer
    x = 8,172.45

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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.