Home / 38,012.49-52,455.12-21,015.75

Finding the Fourth Proportional to 38,012.49, 52,455.12 and 21,015.75

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Solution

The fourth proportional to 38,012.49, 52,455.12 and 21,015.75 is: 29,000.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,012.49 : 52,455.12 = 21,015.75 : x
  2. Step 2: Convert to fraction form
    38,012.49/52,455.12 = 21,015.75/x
  3. Step 3: Cross multiply
    38,012.49x = 52,455.12 × 21,015.75
  4. Step 4: Simplify right side
    38,012.49x = 1,102,383,530.84
  5. Step 5: Solve for x
    x = 1,102,383,530.84/38,012.49
  6. Step 6: Final answer
    x = 29,000.56

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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.