Home / 20,626.04-30,939.05-7,478.39

Finding the Fourth Proportional to 20,626.04, 30,939.05 and 7,478.39

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Solution

The fourth proportional to 20,626.04, 30,939.05 and 7,478.39 is: 11,217.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.04 : 30,939.05 = 7,478.39 : x
  2. Step 2: Convert to fraction form
    20,626.04/30,939.05 = 7,478.39/x
  3. Step 3: Cross multiply
    20,626.04x = 30,939.05 × 7,478.39
  4. Step 4: Simplify right side
    20,626.04x = 231,374,378.17
  5. Step 5: Solve for x
    x = 231,374,378.17/20,626.04
  6. Step 6: Final answer
    x = 11,217.58

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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.