Home / 30,171.67-45,239.85-9,105.39

Finding the Fourth Proportional to 30,171.67, 45,239.85 and 9,105.39

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Solution

The fourth proportional to 30,171.67, 45,239.85 and 9,105.39 is: 13,652.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,171.67 : 45,239.85 = 9,105.39 : x
  2. Step 2: Convert to fraction form
    30,171.67/45,239.85 = 9,105.39/x
  3. Step 3: Cross multiply
    30,171.67x = 45,239.85 × 9,105.39
  4. Step 4: Simplify right side
    30,171.67x = 411,926,477.79
  5. Step 5: Solve for x
    x = 411,926,477.79/30,171.67
  6. Step 6: Final answer
    x = 13,652.76

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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.