Home / 20,255.34-30,386.04-7,105.39

Finding the Fourth Proportional to 20,255.34, 30,386.04 and 7,105.39

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Solution

The fourth proportional to 20,255.34, 30,386.04 and 7,105.39 is: 10,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.34 : 30,386.04 = 7,105.39 : x
  2. Step 2: Convert to fraction form
    20,255.34/30,386.04 = 7,105.39/x
  3. Step 3: Cross multiply
    20,255.34x = 30,386.04 × 7,105.39
  4. Step 4: Simplify right side
    20,255.34x = 215,904,664.76
  5. Step 5: Solve for x
    x = 215,904,664.76/20,255.34
  6. Step 6: Final answer
    x = 10,659.15

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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.