Home / 38,456.22-53,069.60-21,228.60

Finding the Fourth Proportional to 38,456.22, 53,069.60 and 21,228.60

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Solution

The fourth proportional to 38,456.22, 53,069.60 and 21,228.60 is: 29,295.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,456.22 : 53,069.60 = 21,228.60 : x
  2. Step 2: Convert to fraction form
    38,456.22/53,069.60 = 21,228.60/x
  3. Step 3: Cross multiply
    38,456.22x = 53,069.60 × 21,228.60
  4. Step 4: Simplify right side
    38,456.22x = 1,126,593,005.41
  5. Step 5: Solve for x
    x = 1,126,593,005.41/38,456.22
  6. Step 6: Final answer
    x = 29,295.47

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Half scale
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Double scale
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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.