Home / 20,330.03-30,487.12-7,000.49

Finding the Fourth Proportional to 20,330.03, 30,487.12 and 7,000.49

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Solution

The fourth proportional to 20,330.03, 30,487.12 and 7,000.49 is: 10,498.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.03 : 30,487.12 = 7,000.49 : x
  2. Step 2: Convert to fraction form
    20,330.03/30,487.12 = 7,000.49/x
  3. Step 3: Cross multiply
    20,330.03x = 30,487.12 × 7,000.49
  4. Step 4: Simplify right side
    20,330.03x = 213,424,778.69
  5. Step 5: Solve for x
    x = 213,424,778.69/20,330.03
  6. Step 6: Final answer
    x = 10,498.01

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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.