Home / 39,213.99-54,117.38-22,221.53

Finding the Fourth Proportional to 39,213.99, 54,117.38 and 22,221.53

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Solution

The fourth proportional to 39,213.99, 54,117.38 and 22,221.53 is: 30,666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,213.99 : 54,117.38 = 22,221.53 : x
  2. Step 2: Convert to fraction form
    39,213.99/54,117.38 = 22,221.53/x
  3. Step 3: Cross multiply
    39,213.99x = 54,117.38 × 22,221.53
  4. Step 4: Simplify right side
    39,213.99x = 1,202,570,601.50
  5. Step 5: Solve for x
    x = 1,202,570,601.50/39,213.99
  6. Step 6: Final answer
    x = 30,666.88

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Double scale
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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.