Home / 39,147.83-54,022.51-21,242.24

Finding the Fourth Proportional to 39,147.83, 54,022.51 and 21,242.24

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Solution

The fourth proportional to 39,147.83, 54,022.51 and 21,242.24 is: 29,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,147.83 : 54,022.51 = 21,242.24 : x
  2. Step 2: Convert to fraction form
    39,147.83/54,022.51 = 21,242.24/x
  3. Step 3: Cross multiply
    39,147.83x = 54,022.51 × 21,242.24
  4. Step 4: Simplify right side
    39,147.83x = 1,147,559,122.82
  5. Step 5: Solve for x
    x = 1,147,559,122.82/39,147.83
  6. Step 6: Final answer
    x = 29,313.48

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Half scale
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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.