Home / 39,572.55-54,609.39-21,666.69

Finding the Fourth Proportional to 39,572.55, 54,609.39 and 21,666.69

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Solution

The fourth proportional to 39,572.55, 54,609.39 and 21,666.69 is: 29,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,572.55 : 54,609.39 = 21,666.69 : x
  2. Step 2: Convert to fraction form
    39,572.55/54,609.39 = 21,666.69/x
  3. Step 3: Cross multiply
    39,572.55x = 54,609.39 × 21,666.69
  4. Step 4: Simplify right side
    39,572.55x = 1,183,204,724.22
  5. Step 5: Solve for x
    x = 1,183,204,724.22/39,572.55
  6. Step 6: Final answer
    x = 29,899.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.