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Finding the Fourth Proportional to 27,775.92, 38,284.08 and 21,059.28

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Solution

The fourth proportional to 27,775.92, 38,284.08 and 21,059.28 is: 29,026.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,775.92 : 38,284.08 = 21,059.28 : x
  2. Step 2: Convert to fraction form
    27,775.92/38,284.08 = 21,059.28/x
  3. Step 3: Cross multiply
    27,775.92x = 38,284.08 × 21,059.28
  4. Step 4: Simplify right side
    27,775.92x = 806,235,160.26
  5. Step 5: Solve for x
    x = 806,235,160.26/27,775.92
  6. Step 6: Final answer
    x = 29,026.41

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Half scale
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Double scale
Find fourth proportional to 27,776.92, 38,285.46 and 21,060.28
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.