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Finding the Fourth Proportional to 38,443.61, 53,054.03 and 21,676.25

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Solution

The fourth proportional to 38,443.61, 53,054.03 and 21,676.25 is: 29,914.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,443.61 : 53,054.03 = 21,676.25 : x
  2. Step 2: Convert to fraction form
    38,443.61/53,054.03 = 21,676.25/x
  3. Step 3: Cross multiply
    38,443.61x = 53,054.03 × 21,676.25
  4. Step 4: Simplify right side
    38,443.61x = 1,150,012,309.41
  5. Step 5: Solve for x
    x = 1,150,012,309.41/38,443.61
  6. Step 6: Final answer
    x = 29,914.26

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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.