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Finding the Fourth Proportional to 38,443.25, 53,051.69 and 20,779.25

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Solution

The fourth proportional to 38,443.25, 53,051.69 and 20,779.25 is: 28,675.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,443.25 : 53,051.69 = 20,779.25 : x
  2. Step 2: Convert to fraction form
    38,443.25/53,051.69 = 20,779.25/x
  3. Step 3: Cross multiply
    38,443.25x = 53,051.69 × 20,779.25
  4. Step 4: Simplify right side
    38,443.25x = 1,102,374,225.54
  5. Step 5: Solve for x
    x = 1,102,374,225.54/38,443.25
  6. Step 6: Final answer
    x = 28,675.37

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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.