Home / 39,249.87-54,165.08-21,345.07

Finding the Fourth Proportional to 39,249.87, 54,165.08 and 21,345.07

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Solution

The fourth proportional to 39,249.87, 54,165.08 and 21,345.07 is: 29,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,249.87 : 54,165.08 = 21,345.07 : x
  2. Step 2: Convert to fraction form
    39,249.87/54,165.08 = 21,345.07/x
  3. Step 3: Cross multiply
    39,249.87x = 54,165.08 × 21,345.07
  4. Step 4: Simplify right side
    39,249.87x = 1,156,157,424.16
  5. Step 5: Solve for x
    x = 1,156,157,424.16/39,249.87
  6. Step 6: Final answer
    x = 29,456.34

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Half scale
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Double scale
Find fourth proportional to 39,250.87, 54,166.46 and 21,346.07
Similar ratio
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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.