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Finding the Fourth Proportional to 38,627.54, 53,308.92 and 21,630.92

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Solution

The fourth proportional to 38,627.54, 53,308.92 and 21,630.92 is: 29,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,627.54 : 53,308.92 = 21,630.92 : x
  2. Step 2: Convert to fraction form
    38,627.54/53,308.92 = 21,630.92/x
  3. Step 3: Cross multiply
    38,627.54x = 53,308.92 × 21,630.92
  4. Step 4: Simplify right side
    38,627.54x = 1,153,120,983.81
  5. Step 5: Solve for x
    x = 1,153,120,983.81/38,627.54
  6. Step 6: Final answer
    x = 29,852.30

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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.